Nombre: Risa Ozaki
País: Japan
Fecha de nacimiento: 10.04.94, 32 años
WTA ranking: 710
TOP posición de la clasificación: 70 (24.04.17, 81900 puntos)
Puntos: 45
Dinero del premio: 728333 $
Partidos totales: 496
ganar: 264
%: 53.23 %
País: Japan
Fecha de nacimiento: 10.04.94, 32 años
WTA ranking: 710
TOP posición de la clasificación: 70 (24.04.17, 81900 puntos)
Puntos: 45
Dinero del premio: 728333 $
Partidos totales: 496
ganar: 264
%: 53.23 %
| año | resumen | Difícil | Arcilla | I. difícil | Alfombra | Césped | Acrílico |
| 2020 | 1/2 | 1/2 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2019 | 24/31 | 18/25 | 4/2 | 0/1 | 2/3 | 0/0 | 0/0 |
| 2018 | 25/30 | 21/23 | 3/5 | 1/2 | 0/0 | 0/0 | 0/0 |
| 2017 | 22/35 | 17/20 | 2/6 | 1/3 | 1/1 | 1/5 | 0/0 |
| 2016 | 38/21 | 34/14 | 0/3 | 0/0 | 0/1 | 4/3 | 0/0 |
| 2015 | 37/32 | 23/16 | 12/10 | 0/3 | 2/2 | 0/1 | 0/0 |
| 2014 | 35/28 | 30/18 | 1/5 | 0/0 | 1/1 | 3/4 | 0/0 |
| 2013 | 36/22 | 29/15 | 2/2 | 2/2 | 0/0 | 3/3 | 0/0 |
| 2012 | 35/16 | 21/8 | 7/2 | 0/0 | 3/1 | 4/5 | 0/0 |
| 2011 | 9/9 | 6/6 | 0/1 | 0/0 | 1/1 | 2/1 | 0/0 |
| 2010 | 2/5 | 2/3 | 0/1 | 0/0 | 0/0 | 0/1 | 0/0 |
| 2009 | 0/1 | 0/1 | 0/0 | 0/0 | 0/0 | 0/0 | 0/0 |
| TOTAL | 264/232 | 202/151 | 31/37 | 4/11 | 10/10 | 17/23 | 0/0 |
| porc. % | 53.23 % | 57.22 % | 45.59 % | 26.67 % | 50 % | 42.5 % | 0 % |
Risa Ozaki / programado / pasado
| No se encontraron partidos |
Risa Ozaki form / superficie: Difícil
Risa Ozaki / superficie: Difícil
| 03.03.20 | 1er ronda | Himeno Sakatsume | Risa Ozaki | 6-4, 6-0 |  | match details |  W25 Yokohama | Difícil |
| 09.01.20 | 2da ronda | Moyuka Uchijima | Risa Ozaki | 6-4, 6-2 | | match details |  W25 Hong | Difícil |
| 08.01.20 | 1er ronda | Risa Ozaki | Kwan Yau Ng | 6-2, 6-2 |  | match details | ||
| 01.01.20 | 1er ronda | Xiaodi You | Risa Ozaki | 6-3, 6-2 | | match details | W25 Hong | Difícil |
| 31.10.19 | 2da ronda | Jennifer Elie | Risa Ozaki | 6-2, 6-2 | | match details |  W60 Playford | Difícil |
| 30.10.19 | 1er ronda | Risa Ozaki | Alicia Smith | 6-2, 3-6, 6-3 | | match details | ||
| 23.10.19 | 2da ronda | Maddison Inglis | Risa Ozaki | 6-2, 7-65 | | match details | W60 Bendigo | Difícil |
| 22.10.19 | 1er ronda | Risa Ozaki | Naiktha Bains | 7-64, 6-4 | | match details | ||
| 07.10.19 | 1er ronda | Alison Bai | Risa Ozaki | 6-4, 6-2 | | match details | W25 Toowoomba | Difícil |
| 02.10.19 | 2da ronda | Asia Muhammad | Risa Ozaki | 6-3, 6-3 | | match details | W25 Brisbane | Difícil |
| 01.10.19 | 1er ronda | Risa Ozaki | Haruka Kaji | 4-6, 7-64, 6-4 | | match details | ||
| 25.09.19 | 1er ronda | Chihiro Muramatsu | Risa Ozaki | 6-2, 6-4 | | match details | W60 Darwin | Difícil |
| 14.09.19 | c 1 | Xinyun Han | Risa Ozaki | 6-2, 6-3 | | match details | Osaka | Difícil |
| 10.09.19 | 1er ronda | Su-Wei Hsieh | Risa Ozaki | 6-1, 3-6, 6-3 | | match details | Hiroshima | Difícil |
| 28.08.19 | 1er ronda | Kaylah Mcphee | Risa Ozaki | 4-6, 6-1, 7-5 | | match details |  W60 Jinan | Difícil |
| 21.08.19 | 1er ronda | Carol Zhao | Risa Ozaki | 6-2, 6-3 | | match details | W25 Tsukuba | Difícil |
| 23.07.19 | 1er ronda | Yuuki Tanaka | Risa Ozaki | 2-6, 6-4, 2-1, Risa Ozaki - retirado | | match details |  W80 Granby | Difícil |
| 16.07.19 | 1er ronda | Carol Zhao | Risa Ozaki | 6-3, 1-6, 6-2 | | match details | W25 Gatineau | Difícil |
| 11.07.19 | 2da ronda | Kayla Day | Risa Ozaki | 7-5, 6-3 | | match details |  W60 Honolulu | Difícil |
| 10.07.19 | 1er ronda | Risa Ozaki | Kelly Chen | 7-5, 6-4 | | match details | ||
| 23.06.19 | fin | Risa Ozaki | Arianne Hartono | 6-4, 6-1 | | match details |  W25 Jakarta | Difícil |
| 22.06.19 | 1/2 | Risa Ozaki | Hiroko Kuwata | 6-2, 6-1 | | match details | ||
| 21.06.19 | 1/4 | Risa Ozaki | Nudnida Luangnam | 6-2, 7-5 | | match details | ||
| 20.06.19 | 2da ronda | Risa Ozaki | Beatrice Gumulya | 2-6, 6-1, 6-1 | | match details | ||
| 19.06.19 | 1er ronda | Risa Ozaki | Janice Tjen | 6-0, 6-2 | | match details | ||
| 29.05.19 | 1er ronda | Magali Kempen | Risa Ozaki | 6-1, 7-5 | | match details |  W25 Nonthaburi | Difícil |
| 23.05.19 | 2da ronda | Alexandra Bozovic | Risa Ozaki | 6-4, 4-6, 6-4 | | match details | W25 Nonthaburi | Difícil |
| 22.05.19 | 1er ronda | Risa Ozaki | Watsachol Sawatdee | 6-3, 7-63 | | match details | ||
| 03.05.19 | 1/4 | Maddison Inglis | Risa Ozaki | 6-71, 6-2, 6-2 | | match details | W80 Gifu | Difícil |
| 02.05.19 | 2da ronda | Risa Ozaki | Danielle Lao | 6-2, 6-3 | | match details | ||
| 30.04.19 | 1er ronda | Risa Ozaki | Kristie Ahn | 6-2, 6-3 | | match details | ||
| 11.04.19 | 2da ronda | Erika Sema | Risa Ozaki | 7-5, 7-61 | | match details | W25 Osaka | Difícil |
| 09.04.19 | 1er ronda | Risa Ozaki | Mei Yamaguchi | 6-4, 4-6, 6-2 | | match details | ||
| 02.04.19 | 1er ronda | Daria Snigur | Risa Ozaki | 0-6, 6-3, 6-4 | | match details | W25 Kashiwa | Difícil |
| 13.03.19 | 1er ronda | Giulia Gatto-Monticone | Risa Ozaki | 6-2, 6-2 | | match details | W25 Nishi | Difícil |
| 05.03.19 | 1er ronda | Mayo Hibi | Risa Ozaki | 3-6, 6-3, 6-2 | | match details | W25 Yokohama | Difícil |
| 26.02.19 | calif. | Miharu Imanishi | Risa Ozaki | 3-6, 6-1, 10-7 | | match details | W25 Osaka | Difícil |
| 25.02.19 | c 1 | Risa Ozaki | Olivia Tjandramulia | 4-6, 7-63, 10-5 | | match details | ||
| 21.01.19 | c 1 | Aldila Sutjiadi | Risa Ozaki | 6-2, 4-6, 10-4 | | match details |  W25 Singapore | Difícil |
| 15.01.19 | calif. | Cagla Buyukakcay | Risa Ozaki | 7-64, 6-0 | | match details | W25 Singapore | Difícil |
| 13.01.19 | c 1 | Risa Ozaki | Julienne Goh | 6-0, 6-1 | | match details | ||
| 11.01.19 | 1/4 | Shuyue Ma | Risa Ozaki | 7-64, 7-5 | | match details | W25 Hong | Difícil |
| 10.01.19 | 2da ronda | Risa Ozaki | Fatma Al Nabhani | 3-6, 6-3, 6-4 | | match details | ||
| 09.01.19 | 1er ronda | Risa Ozaki | Olivia Tjandramulia | 6-4, 6-2 | | match details | ||
| 03.01.19 | 2da ronda | En Shuo Liang | Risa Ozaki | 6-4, 6-3 | | match details | W25 Hong | Difícil |
| 02.01.19 | 1er ronda | Risa Ozaki | Jacqueline Cabaj Awad | 6-2, 5-7, 6-1 | | match details | ||
| 26.11.18 | 1er ronda | Ekaterina Yashina | Risa Ozaki | 6-4, 6-2 | | match details |  Pune | Difícil |
| 14.11.18 | 1er ronda | Maria Camila Osorio Serrano | Risa Ozaki | 6-4, 6-4 | | match details | Norman | Difícil |
| 04.11.18 | c 1 | Olga Doroshina | Risa Ozaki | 6-4, 3-6, 7-63 | | match details | Shenzhen | Difícil |
| 02.11.18 | 1/4 | Astra Sharma | Risa Ozaki | 6-4, 3-6, 6-0 | | match details | Canberra | Difícil |
| 01.11.18 | 2da ronda | Risa Ozaki | Arina Rodionova | 4-6, 7-63, 6-3 | | match details | ||
| 30.10.18 | 1er ronda | Risa Ozaki | Alana Parnaby | 6-3, 6-3 | | match details | ||
| 23.10.18 | 1er ronda | Destanee Aiava | Risa Ozaki | 6-4, 7-61 | | match details | Bendigo | Difícil |
| 04.10.18 | 2da ronda | Rutuja Bhosale | Risa Ozaki | 6-1, 5-7, 6-2 | | match details | Brisbane | Difícil |
| 02.10.18 | 1er ronda | Risa Ozaki | Alison Bai | 6-3, 6-2 | | match details | ||
| 26.09.18 | 1er ronda | Kimberly Birrell | Risa Ozaki | 6-4, 6-1 | | match details | Darwin | Difícil |
| 09.09.18 | c 1 | Chihiro Muramatsu | Risa Ozaki | 6-4, 3-6, 6-3 | | match details | Hiroshima | Difícil |
| 13.08.18 | c 2 | Martina Trevisan | Risa Ozaki | 6-3, 6-3 | | match details | Vancouver | Difícil |
| 12.08.18 | c 1 | Risa Ozaki | Emily Webley-Smith | 6-1, 6-2 | | match details | ||
| 08.08.18 | 1er ronda | Anastasia Potapova | Risa Ozaki | 2-6, 6-4, 6-0 | | match details | Landisville | Difícil |
| 07.08.18 | calif. | Risa Ozaki | Katerina Stewart | 6-1, 6-2 | | match details | ||
| 06.08.18 | c 2 | Risa Ozaki | Natela Dzalamidze | 6-1, 6-4 | | match details | ||
| 05.08.18 | c 1 | Risa Ozaki | Ashley Lahey | 2-6, 6-1, 6-1 | | match details | ||
| 14.07.18 | fin | Ankita Raina | Risa Ozaki | 6-2, 6-3 | | match details | Nonthaburi | Difícil |
| 13.07.18 | 1/2 | Risa Ozaki | Peangtarn Plipuech | 7-5, 6-2 | | match details | ||
| 12.07.18 | 1/4 | Risa Ozaki | Hiroko Kuwata | 6-2, 4-6, 6-2 | | match details | ||
| 11.07.18 | 2da ronda | Risa Ozaki | Kai-Chen Chang | 6-2, 6-4 | | match details | ||
| 09.07.18 | 1er ronda | Risa Ozaki | Sunam Jeong | 4-6, 6-4, 6-4 | | match details | ||
| 19.06.18 | 1er ronda | Jovana Jovic | Risa Ozaki | 6-2, 3-6, 6-1 | | match details | Hong Kong | Difícil |
| 16.06.18 | fin | Julia Glushko | Risa Ozaki | 1-6, 6-1, 6-4 | | match details | Singapore | Difícil |
| 15.06.18 | 1/2 | Risa Ozaki | Haruka Kaji | 2-6, 6-0, 6-4 | | match details | ||
| 14.06.18 | 1/4 | Risa Ozaki | Ji-Hee Choi | 6-1, 6-1 | | match details | ||
| 13.06.18 | 2da ronda | Risa Ozaki | Priscilla Heise | 6-1, 6-2 | | match details | ||
| 11.06.18 | 1er ronda | Risa Ozaki | Tereza Mihalikova | 6-3, 7-64 | | match details | ||
| 07.06.18 | 1/4 | Karman Kaur Thandi | Risa Ozaki | 3-6, 6-2, 6-4 | | match details | Hua Hin | Difícil |
| 06.06.18 | 2da ronda | Risa Ozaki | Monica Robinson | 6-1, 6-1 | | match details | ||
| 04.06.18 | 1er ronda | Risa Ozaki | Alina Silich | 6-3, Alina Silich - retirado | | match details | ||
| 30.05.18 | 2da ronda | Watsachol Sawatdee | Risa Ozaki | 6-3, 6-4 | | match details | Hua Hin | Difícil |
| 29.05.18 | 1er ronda | Risa Ozaki | Nudnida Luangnam | 7-5, 6-3 | | match details | ||
| 25.05.18 | 1/4 | Varvara Flink | Risa Ozaki | 7-69, 6-0 | | match details |  Changwon | Difícil |
| 24.05.18 | 2da ronda | Risa Ozaki | Nadja Gilchrist | 7-5, 6-3 | | match details | ||
| 23.05.18 | 1er ronda | Risa Ozaki | Sung Hee Kim | 6-0, 6-1 | | match details | ||
| 02.04.18 | 1er ronda | Magdalena Rybarikova | Risa Ozaki | 6-4, 6-3 | | match details |  Monterrey | Difícil |
| 13.03.18 | 1er ronda | Viktoria Hruncakova | Risa Ozaki | 6-4, 6-2 | | match details | Shenzhen | Difícil |
| 05.03.18 | c 1 | Su-Wei Hsieh | Risa Ozaki | 6-4, 6-3 | | match details | Indian Wells | Difícil |
| 24.02.18 | c 1 | Francesca Di Lorenzo | Risa Ozaki | 6-4, 6-2 | | match details | Indian Wells | Difícil |
| 10.02.18 | c 1 | Monica Niculescu | Risa Ozaki | 6-1, 6-0 | | match details |  Doha | Difícil |
| 11.01.18 | c 1 | Miharu Imanishi | Risa Ozaki | 5-7, 7-66, 6-1 | | match details | Melbourne | Difícil |
| 31.12.17 | c 2 | Arantxa Rus | Risa Ozaki | 6-3, 2-6, 6-1 | | match details |  Auckland | Difícil |
| 29.12.17 | c 1 | Risa Ozaki | Asia Muhammad | 6-3, 6-4 | | match details | ||
| 21.11.17 | 1er ronda | Vitalia Diatchenko | Risa Ozaki | 6-1, 6-0 | | match details | Honolulu | Difícil |
| 08.11.17 | 1er ronda | Mayo Hibi | Risa Ozaki | 6-1, 6-1 | | match details | Tokyo | Difícil |
| 10.10.17 | 1er ronda | Venus Williams | Risa Ozaki | 6-2, 6-2 | | match details | Hong Kong | Difícil |
| 25.09.17 | 1er ronda | Pauline Parmentier | Risa Ozaki | 6-2, 6-4 | | match details |  Tashkent | Difícil |
| 19.09.17 | 1er ronda | Shelby Rogers | Risa Ozaki | 6-2, 7-65 | | match details | Tokyo | Difícil |
| 12.09.17 | 1er ronda | Magda Linette | Risa Ozaki | 6-1, 7-5 | | match details | Tokyo | Difícil |
| 31.08.17 | 2da ronda | Shuai Zhang | Risa Ozaki | 6-0, 6-3 | | match details | New York | Difícil |
| 30.08.17 | 1er ronda | Risa Ozaki | Danielle Lao | 6-3, 6-75, 7-65 | | match details | ||
| 18.08.17 | c 1 | Varvara Lepchenko | Risa Ozaki | 6-3, 6-3 | | match details | New Haven | Difícil |
| 12.08.17 | c 1 | Ashleigh Barty | Risa Ozaki | 7-5, 6-2 | | match details | Cincinnati | Difícil |
| 06.08.17 | calif. | Lara Arruabarrena | Risa Ozaki | 7-5, 6-4 | | match details | Toronto | Difícil |
| 05.08.17 | c 1 | Risa Ozaki | Charlotte Robillard-Millette | 6-3, 6-3 | | match details | ||
| 31.07.17 | 1er ronda | Sara Errani | Risa Ozaki | 7-60, 6-2 | | match details | Washington | Difícil |
| 25.07.17 | 1er ronda | Lin Zhu | Risa Ozaki | 6-0, 7-5 | | match details | Nanchang | Difícil |
| 27.03.17 | 4to ronda | Angelique Kerber | Risa Ozaki | 6-2, 6-2 | | match details | Miami | Difícil |
| 26.03.17 | 3er ronda | Risa Ozaki | Julia Goerges | 7-65, 6-3 | | match details | ||
| 24.03.17 | 2da ronda | Risa Ozaki | Kiki Bertens | 6-4, 4-6, 6-1 | | match details | ||
| 22.03.17 | 1er ronda | Risa Ozaki | Louisa Chirico | 3-6, 7-5, 6-1 | | match details | ||
| 21.03.17 | calif. | Risa Ozaki | Julia Boserup | 7-5, 6-0 | | match details | ||
| 20.03.17 | c 1 | Risa Ozaki | Katie Swan | 6-3, 6-3 | | match details | ||
| 09.03.17 | 1er ronda | Naomi Osaka | Risa Ozaki | 6-4, 6-2 | | match details | Indian Wells | Difícil |
| 07.03.17 | calif. | Risa Ozaki | Samantha Crawford | 1-6, 6-3, 7-65 | | match details | ||
| 06.03.17 | c 1 | Risa Ozaki | Veronica Cepede Royg | 6-4, 6-4 | | match details | ||
| 01.03.17 | 2da ronda | Kai-Lin Zhang | Risa Ozaki | 6-2, 6-4 | | match details |  Kuala Lumpur | Difícil |
| 27.02.17 | 1er ronda | Risa Ozaki | Cagla Buyukakcay | 6-2, 3-6, 6-4 | | match details | ||
| 18.02.17 | calif. | Silvia Soler-Espinosa | Risa Ozaki | 6-4, 6-3 | | match details |  Dubai | Difícil |
| 17.02.17 | c 1 | Risa Ozaki | Nadiya Kichenok | 6-3, 6-4 | | match details | ||
| 12.02.17 | c 2 | Jelena Jankovic | Risa Ozaki | 6-4, 6-3 | | match details | Doha | Difícil |
| 11.02.17 | c 1 | Risa Ozaki | Paula Cristina Goncalves | 6-1, 6-1 | | match details | ||
| 17.01.17 | 1er ronda | Sara Errani | Risa Ozaki | 7-5, 6-1 | | match details | Melbourne | Difícil |
| 12.01.17 | 1/4 | Monica Niculescu | Risa Ozaki | 6-4, 6-4 | | match details | Hobart | Difícil |
| 11.01.17 | 2da ronda | Risa Ozaki | Lucie Safarova | 2-6, 6-3, 7-5 | | match details | ||
| 09.01.17 | 1er ronda | Risa Ozaki | Kurumi Nara | 0-6, 7-5, 6-3 | | match details | ||
| 08.01.17 | calif. | Risa Ozaki | Ashleigh Barty | Ashleigh Barty - walk over | | match details | ||
| 07.01.17 | c 2 | Risa Ozaki | Ekaterina Alexandrova | 6-0, 6-2 | | match details | ||
| 06.01.17 | c 1 | Risa Ozaki | Tammi Patterson | 3-6, 7-68, 6-1 | | match details | ||
| 31.12.16 | c 1 | Anastasia Pivovarova | Risa Ozaki | 6-75, 6-4, 6-1 | | match details | Shenzhen | Difícil |
| 10.11.16 | 2da ronda | Shuai Peng | Risa Ozaki | 6-1, 6-4 | | match details | Tokyo | Difícil |
| 09.11.16 | 1er ronda | Risa Ozaki | Ipek Soylu | 4-6, 6-0, 6-4 | | match details | ||
| 06.11.16 | fin | Risa Ozaki | Georgia Brescia | 6-4, 6-4 | | match details | Canberra | Difícil |
| 05.11.16 | 1/2 | Risa Ozaki | Jennifer Elie | 3-6, 6-1, 6-0 | | match details | ||
| 04.11.16 | 1/4 | Risa Ozaki | Arina Rodionova | 6-4, 6-3 | | match details | ||
| 02.11.16 | 2da ronda | Risa Ozaki | Olivia Rogowska | 6-4, 6-2 | | match details | ||
| 01.11.16 | 1er ronda | Risa Ozaki | Abbie Myers | 6-4, 6-3 | | match details | ||
| 29.10.16 | fin | Risa Ozaki | Asia Muhammad | 6-3, 6-3 | | match details | Bendigo | Difícil |
| 28.10.16 | 1/4 | Risa Ozaki | Lizette Cabrera | 6-2, 4-6, 6-3 | | match details | ||
| 28.10.16 | 1/2 | Risa Ozaki | Abigail Tere-Apisah | 6-2, 6-3 | | match details | ||
| 27.10.16 | 2da ronda | Risa Ozaki | Jaimee Fourlis | 6-2, 6-4 | | match details | ||
| 25.10.16 | 1er ronda | Risa Ozaki | Shelby Talcott | 6-2, 6-1 | | match details | ||
| 10.10.16 | 1er ronda | Venus Williams | Risa Ozaki | 6-4, 6-1 | | match details | Hong Kong | Difícil |
| 28.09.16 | 2da ronda | Nao Hibino | Risa Ozaki | 7-5, 6-1 | | match details | Tashkent | Difícil |
| 27.09.16 | 1er ronda | Risa Ozaki | Elitsa Kostova | 3-6, 6-4, 6-1 | | match details | ||
| 18.09.16 | c 1 | Shuko Aoyama | Risa Ozaki | 7-5, 6-2 | | match details | Tokyo | Difícil |
| 12.09.16 | 1er ronda | Varvara Lepchenko | Risa Ozaki | 6-0, 6-2 | | match details | Tokyo | Difícil |
| 26.08.16 | calif. | Jessica Pegula | Risa Ozaki | 4-6, 6-0, 6-3 | | match details | New York | Difícil |
| 25.08.16 | c 2 | Risa Ozaki | Na-Lae Han | 6-1, 6-2 | | match details | ||
| 23.08.16 | c 1 | Risa Ozaki | Catalina Pella | 7-65, 6-1 | | match details | ||
| 06.08.16 | 1/2 | Vania King | Risa Ozaki | 6-2, 6-2 | | match details | Nanchang | Difícil |
| 05.08.16 | 1/4 | Risa Ozaki | Francesca Schiavone | 5-7, 6-1, 6-2 | | match details | ||
| 03.08.16 | 2da ronda | Risa Ozaki | Nicha Lertpitaksinchai | 6-0, 6-3 | | match details | ||
| 01.08.16 | 1er ronda | Risa Ozaki | Na-Lae Han | 6-3, 6-1 | | match details | ||
| 22.07.16 | 1/4 | Yulia Putintseva | Risa Ozaki | 6-4, 6-2 | | match details | Washington | Difícil |
| 21.07.16 | 2da ronda | Risa Ozaki | Naomi Broady | 6-1, 5-7, 6-4 | | match details | ||
| 19.07.16 | 1er ronda | Risa Ozaki | Sloane Stephens | 6-2, 6-1 | | match details | ||
| 10.03.16 | 1er ronda | Eugenie Bouchard | Risa Ozaki | 2-6, 6-4, 6-2 | | match details | Indian Wells | Difícil |
| 08.03.16 | calif. | Risa Ozaki | Anett Kontaveit | 7-65, 6-4 | | match details | ||
| 07.03.16 | c 1 | Risa Ozaki | Magda Linette | 2-6, 7-63, 6-4 | | match details | ||
| 03.03.16 | 2da ronda | Elina Svitolina | Risa Ozaki | 6-1, 3-6, 6-0 | | match details | Kuala Lumpur | Difícil |
| 01.03.16 | 1er ronda | Risa Ozaki | Elizaveta Kulichkova | 6-0, 6-2 | | match details | ||
| 28.02.16 | calif. | Risa Ozaki | Katarzyna Piter | 6-1, 7-64 | | match details | ||
| 27.02.16 | c 1 | Risa Ozaki | Laura Pous-Tio | 3-6, 7-64, 6-0 | | match details | ||
| 12.02.16 | 1/4 | Su Jeong Jang | Risa Ozaki | 4-6, 6-4, 6-0 | | match details | Perth | Difícil |
| 11.02.16 | 2da ronda | Risa Ozaki | Na-Lae Han | 6-0, 6-4 | | match details | ||
| 08.02.16 | 1er ronda | Risa Ozaki | Freya Christie | 6-3, 3-6, 7-5 | | match details | ||
| 06.02.16 | 1/2 | Xinyun Han | Risa Ozaki | 6-1, 6-4 | | match details | Launceston | Difícil |
| 05.02.16 | 1/4 | Risa Ozaki | Zhaoxuan Yang | 7-61, 6-1 | | match details | ||
| 03.02.16 | 2da ronda | Risa Ozaki | Katarzyna Piter | 6-1, 3-6, 6-1 | | match details | ||
| 02.02.16 | 1er ronda | Risa Ozaki | Jennifer Elie | 6-4, 6-2 | | match details | ||
| 15.01.16 | c 2 | Maryna Zanevska | Risa Ozaki | 6-2, 6-1 | | match details | Melbourne | Difícil |
| 14.01.16 | c 1 | Risa Ozaki | Pauline Parmentier | 6-3, 6-2 | | match details | ||
| 08.01.16 | 1/2 | Risa Ozaki | Kristyna Pliskova | 3-6, 6-3, 6-2 | | match details | Hong Kong | Difícil |
| 08.01.16 | fin | Viktorija Golubic | Risa Ozaki | 6-3, 6-3 | | match details | ||
| 07.01.16 | 1/4 | Risa Ozaki | Mizuno Kijima | 6-1, 6-2 | | match details | ||
| 06.01.16 | 2da ronda | Risa Ozaki | Mayo Hibi | 6-4, 6-3 | | match details | ||
| 04.01.16 | 1er ronda | Risa Ozaki | Kwan Yau Ng | 6-0, 6-1 | | match details | ||
| 21.12.15 | 1/2 | Risa Ozaki | Ran Tian | 6-3, 7-5 | | match details | Bangkok | Difícil |
| 21.12.15 | 1er ronda | Risa Ozaki | Yuuki Tanaka | 7-66, 7-61 | | match details | ||
| 21.12.15 | fin | Na-Lae Han | Risa Ozaki | 6-2, 6-4 | | match details | ||
| 21.12.15 | 2da ronda | Risa Ozaki | Shuko Aoyama | 2-6, 6-1, 7-5 | | match details | ||
| 21.12.15 | 1/4 | Risa Ozaki | Sabina Sharipova | 6-3, 6-2 | | match details | ||
| 09.11.15 | 1er ronda | Yingying Duan | Risa Ozaki | 6-4, 6-2 | | match details | Hua Hin | Difícil |
| 13.10.15 | 1er ronda | Samantha Stosur | Risa Ozaki | 6-3, 6-1 | | match details | Hong Kong | Difícil |
| 21.09.15 | calif. | Ana Konjuh | Risa Ozaki | 6-4, 6-0 | | match details | Tokyo | Difícil |
| 20.09.15 | c 2 | Risa Ozaki | Miyabi Inoue | 7-5, 6-3 | | match details | ||
| 19.09.15 | c 1 | Risa Ozaki | Eri Hozumi | 6-3, 6-3 | | match details | ||
| 16.09.15 | 2da ronda | Christina Mchale | Risa Ozaki | 6-1, 7-5 | | match details | Tokyo | Difícil |
| 15.09.15 | 1er ronda | Risa Ozaki | Bojana Jovanovski | 6-1, 6-1 | | match details | ||
| 14.09.15 | calif. | Risa Ozaki | Maria-Teresa Torro-Flor | 2-0, Maria-Teresa Torro-Flor - retirado | | match details | ||
| 13.09.15 | c 2 | Risa Ozaki | Zhaoxuan Yang | 7-63, 6-2 | | match details | ||
| 12.09.15 | c 1 | Risa Ozaki | Tereza Martincova | 6-4, 6-4 | | match details | ||
| 08.09.15 | 1er ronda | Petra Martic | Risa Ozaki | 5-7, 6-4, 6-0 | | match details | Dalian | Difícil |
| 26.08.15 | c 1 | Latisha Chan | Risa Ozaki | 6-3, 7-5 | | match details | New York | Difícil |
| 17.08.15 | 1er ronda | Kateryna Baindl | Risa Ozaki | 6-3, 6-3 | | match details | Vancouver | Difícil |
| 15.06.15 | fin | Risa Ozaki | Chang Liu | 5-7, 7-64, 6-3 | | match details | Incheon | Difícil |
| 15.06.15 | 2da ronda | Risa Ozaki | Vojislava Lukic | 6-3, 6-3 | | match details | ||
| 15.06.15 | 1/4 | Risa Ozaki | Ya-Hsuan Lee | 6-1, 2-6, 7-5 | | match details | ||
| 15.06.15 | 1/2 | Risa Ozaki | Kai-Chen Chang | 6-4, 6-4 | | match details | ||
| 15.06.15 | 1er ronda | Risa Ozaki | Miki Miyamura | 6-3, 6-3 | | match details | ||
| 08.06.15 | fin | So-Ra Lee | Risa Ozaki | 6-4, 3-6, 6-4 | | match details | Goyang | Difícil |
| 08.06.15 | 1er ronda | Risa Ozaki | Seo-Kyung Kang | 6-1, 6-4 | | match details | ||
| 08.06.15 | 1/4 | Risa Ozaki | Kristie Ahn | 4-6, 6-4, 6-3 | | match details | ||
| 08.06.15 | 2da ronda | Risa Ozaki | Hanna Chang | 6-2, 6-0 | | match details | ||
| 08.06.15 | 1/2 | Risa Ozaki | Kai-Chen Chang | 6-2, 6-1 | | match details | ||
| 23.03.15 | 1er ronda | Risa Ozaki | Junri Namigata | 7-5, 3-6, 6-2 | | match details | Quanzhou | Difícil |
| 23.03.15 | 2da ronda | Elizaveta Kulichkova | Risa Ozaki | 6-4, 6-2 | | match details | ||
| 28.02.15 | c 1 | Lyudmyla Kichenok | Risa Ozaki | 6-4, 7-65 | | match details | Kuala Lumpur | Difícil |
| 23.02.15 | calif. | Louisa Chirico | Risa Ozaki | 6-2, 6-3 | | match details | Acapulco | Difícil |
| 22.02.15 | c 2 | Risa Ozaki | An-Sophie Mestach | 7-62, 6-1 | | match details | ||
| 21.02.15 | c 1 | Risa Ozaki | Nao Hibino | 7-64, 7-5 | | match details | ||
| 09.02.15 | 1er ronda | Zhaoxuan Yang | Risa Ozaki | 6-1, 6-0 | | match details | Launceston | Difícil |
| 02.02.15 | 2da ronda | Alison Bai | Risa Ozaki | 6-1, 3-6, 6-4 | | match details | Burnie | Difícil |
| 02.02.15 | 1er ronda | Risa Ozaki | Erika Sema | 6-1, 7-63 | | match details | ||
| 15.01.15 | c 1 | Olga Govortsova | Risa Ozaki | 6-1, 6-0 | | match details | Melbourne | Difícil |
| 03.01.15 | c 1 | Luksika Kumkhum | Risa Ozaki | 6-2, 6-2 | | match details | Shenzhen | Difícil |
| 10.11.14 | 1/4 | Risa Ozaki | Varatchaya Wongteanchai | 6-4, 6-3 | | match details | Bendigo | Difícil |
| 10.11.14 | 1/2 | Risa Ozaki | Susanne Celik | 6-4, 7-5 | | match details | ||
| 10.11.14 | 1er ronda | Risa Ozaki | Chanel Simmonds | 7-5, 7-66 | | match details | ||
| 10.11.14 | fin | Fangzhou Liu | Risa Ozaki | 6-4, 6-3 | | match details | ||
| 10.11.14 | 2da ronda | Risa Ozaki | Ema Mikulcic | 6-3, 1-6, 6-0 | | match details | ||
| 03.11.14 | 1/4 | Risa Ozaki | Varatchaya Wongteanchai | 6-4, 6-2 | | match details | Bendigo | Difícil |
| 03.11.14 | 1/2 | Risa Ozaki | Rebecca Peterson | 7-5, 1-3, Rebecca Peterson - retirado | | match details | ||
| 03.11.14 | fin | Eri Hozumi | Risa Ozaki | 7-65, 5-7, 6-2 | | match details | ||
| 03.11.14 | 1er ronda | Risa Ozaki | Yan Wang | 7-5, 6-4 | | match details | ||
| 03.11.14 | 2da ronda | Risa Ozaki | Kimberly Birrell | 1-6, 6-4, 6-2 | | match details | ||
| 27.10.14 | 1/2 | Rebecca Peterson | Risa Ozaki | 3-6, 6-1, 6-2 | | match details | Margaret River | Difícil |
| 27.10.14 | 1/4 | Risa Ozaki | Alison Bai | 3-6, 6-4, 7-60 | | match details | ||
| 27.10.14 | 1er ronda | Risa Ozaki | Nicole Collie | 6-0, 6-4 | | match details | ||
| 27.10.14 | 2da ronda | Risa Ozaki | Abbie Myers | 6-4, 4-6, 7-5 | | match details | ||
| 06.10.14 | 1er ronda | Yulia Putintseva | Risa Ozaki | 7-63, 6-3 | | match details | Osaka | Difícil |
| 14.09.14 | c 2 | Junri Namigata | Risa Ozaki | 6-2, 6-2 | | match details | Tokyo | Difícil |
| 13.09.14 | c 1 | Risa Ozaki | Ana Konjuh | 6-4, 6-3 | | match details | ||
| 07.09.14 | calif. | Margarita Gasparyan | Risa Ozaki | 6-0, 5-7, 6-2 | | match details | Tashkent | Difícil |
| 06.09.14 | c 1 | Risa Ozaki | Ankita Raina | 6-2, 4-6, 6-1 | | match details | ||
| 04.09.14 | 1/4 | Misa Eguchi | Risa Ozaki | 7-65, 6-0 | | match details | Suzhou | Difícil |
| 03.09.14 | 2da ronda | Risa Ozaki | Chin-Wei Chan | 6-3, 6-2 | | match details | ||
| 01.09.14 | 1er ronda | Risa Ozaki | Yu-Chieh Hsieh | 6-2, 6-0 | | match details | ||
| 20.08.14 | c 1 | Lara Arruabarrena | Risa Ozaki | 7-67, 6-0 | | match details | New York | Difícil |
| 28.07.14 | 2da ronda | Anna Tatishvili | Risa Ozaki | 7-63, 6-3 | | match details | Vancouver | Difícil |
| 28.07.14 | 1er ronda | Risa Ozaki | Chieh-Yu Hsu | 6-3, 6-4 | | match details | ||
| 21.07.14 | 1er ronda | Jennifer Brady | Risa Ozaki | 6-2, 6-4 | | match details | Lexington | Difícil |
| 14.07.14 | 1er ronda | Risa Ozaki | Marina Shamayko | 6-2, 6-1 | | match details | Carson | Difícil |
| 14.07.14 | 1/4 | Sanaz Marand | Risa Ozaki | 6-4, 6-0 | | match details | ||
| 14.07.14 | 2da ronda | Risa Ozaki | Michaella Krajicek | 6-1, 7-5 | | match details | ||
| 07.07.14 | 1/2 | Stephanie Foretz | Risa Ozaki | 7-64, 4-6, 6-4 | | match details | Gatineau | Difícil |
| 07.07.14 | 1er ronda | Risa Ozaki | Stephanie Dubois | 6-2, 6-76, 6-2 | | match details | ||
| 07.07.14 | 2da ronda | Risa Ozaki | Nika Kukharchuk | 6-1, 6-1 | | match details | ||
| 07.07.14 | 1/4 | Risa Ozaki | Mayo Hibi | 6-3, 6-4 | | match details | ||
| 28.04.14 | 2da ronda | Risa Ozaki | Miharu Imanishi | 6-2, 7-64 | | match details | Gifu | Difícil |
| 28.04.14 | 1er ronda | Risa Ozaki | Naomi Osaka | 1-6, 6-3, 7-5 | | match details | ||
| 28.04.14 | 1/4 | An-Sophie Mestach | Risa Ozaki | 6-0, 3-6, 6-4 | | match details | ||
| 21.04.14 | 1er ronda | Risa Ozaki | Suyeon Choi | 6-2, 6-3 | | match details | Seoul | Difícil |
| 21.04.14 | 2da ronda | Risa Ozaki | Jarmila Wolfe | 7-5, 6-4 | | match details | ||
| 21.04.14 | 1/4 | Misaki Doi | Risa Ozaki | 6-3, 6-3 | | match details | ||
| 23.02.14 | c 2 | Lara Arruabarrena | Risa Ozaki | 6-2, 5-7, 6-2 | | match details | Acapulco | Difícil |
| 22.02.14 | c 1 | Risa Ozaki | Coco Vandeweghe | 2-6, 6-3, 7-5 | | match details | ||
| 26.01.14 | c 1 | Sachie Ishizu | Risa Ozaki | 6-0, 4-6, 7-5 | | match details | Pattaya City | Difícil |
| 11.01.14 | calif. | Anna Tatishvili | Risa Ozaki | 6-74, 7-5, 6-2 | | match details | Melbourne | Difícil |
| 10.01.14 | c 2 | Risa Ozaki | An-Sophie Mestach | 6-2, 3-6, 6-4 | | match details | ||
| 09.01.14 | c 1 | Risa Ozaki | Aliaksandra Sasnovich | 6-1, 6-4 | | match details | ||
| 30.12.13 | 1er ronda | Patricia Mayr-Achleitner | Risa Ozaki | 6-2, 6-1 | | match details | Shenzhen | Difícil |
| 29.12.13 | calif. | Risa Ozaki | Estrella Cabeza-Candela | 6-1, 3-6, 6-3 | | match details | ||
| 28.12.13 | c 1 | Risa Ozaki | Aleksandra Krunic | 7-63, 4-6, 7-5 | | match details | ||
| 09.12.13 | calif. | Haochen Tang | Risa Ozaki | 6-3, 6-3 | | match details | Australian Open | Difícil |
| 09.12.13 | c 2 | Risa Ozaki | Fangzhou Liu | 6-2, 6-1 | | match details | ||
| 09.12.13 | c 1 | Risa Ozaki | Chin-Wei Chan | 6-2, 6-4 | | match details | ||
| 28.10.13 | 1er ronda | Anna Schmiedlova | Risa Ozaki | 7-5, 6-4 | | match details | Nanjing | Difícil |
| 06.10.13 | c 2 | Anna Schmiedlova | Risa Ozaki | 1-6, 6-0, 6-1 | | match details | Osaka | Difícil |
| 05.10.13 | c 1 | Risa Ozaki | Varatchaya Wongteanchai | 6-3, 6-2 | | match details | ||
| 23.09.13 | 1er ronda | Shuai Peng | Risa Ozaki | 6-2, 6-1 | | match details | Tokyo | Difícil |
| 21.09.13 | calif. | Risa Ozaki | Silvia Soler-Espinosa | 6-1, 6-4 | | match details | ||
| 20.09.13 | c 1 | Risa Ozaki | Tadeja Majeric | 6-0, 6-4 | | match details | ||
| 17.09.13 | 1er ronda | Annika Beck | Risa Ozaki | 3-6, 7-65, 6-4 | | match details | Seoul | Difícil |
| 16.09.13 | calif. | Risa Ozaki | Varatchaya Wongteanchai | 6-2, 6-1 | | match details | ||
| 15.09.13 | c 2 | Risa Ozaki | Nicha Lertpitaksinchai | 6-3, 6-3 | | match details | ||
| 14.09.13 | c 1 | Risa Ozaki | Ji-Hee Choi | 6-2, 6-0 | | match details | ||
| 11.09.13 | 2da ronda | Nastassja Burnett | Risa Ozaki | 6-4, 3-6, 7-64 | | match details | Tashkent | Difícil |
| 09.09.13 | 1er ronda | Risa Ozaki | Kateryna Baindl | 7-5, 6-2 | | match details | ||
| 08.09.13 | calif. | Risa Ozaki | Ksenia Palkina | 6-1, 7-5 | | match details | ||
| 07.09.13 | c 1 | Risa Ozaki | Veronika Kapshay | 6-1, 6-3 | | match details | ||
| 20.08.13 | c 1 | Camila Giorgi | Risa Ozaki | 6-3, 6-2 | | match details | New York | Difícil |
| 29.07.13 | 1er ronda | Risa Ozaki | Chiara Scholl | 6-0, 6-0 | | match details | Vancouver | Difícil |
| 29.07.13 | 2da ronda | Barbora Strycova | Risa Ozaki | 6-3, 6-71, 6-2 | | match details | ||
| 22.07.13 | 2da ronda | Risa Ozaki | Carol Zhao | 6-1, 4-6, 6-4 | | match details | Winnipeg | Difícil |
| 22.07.13 | 1/4 | Risa Ozaki | Akiko Omae | 5-7, 6-0, 6-4 | | match details | ||
| 22.07.13 | 1/2 | Johanna Konta | Risa Ozaki | 6-3, 6-1 | | match details | ||
| 22.07.13 | 1er ronda | Risa Ozaki | Gloria Liang | 6-3, 6-3 | | match details | ||
| 15.07.13 | 1/2 | Risa Ozaki | Eri Hozumi | 6-2, 6-2 | | match details | Granby | Difícil |
| 15.07.13 | 1er ronda | Risa Ozaki | Elisabeth Fournier | 6-2, 6-3 | | match details | ||
| 15.07.13 | fin | Risa Ozaki | Samantha Murray | 0-6, 7-5, 6-2 | | match details | ||
| 15.07.13 | 2da ronda | Risa Ozaki | Miharu Imanishi | 6-2, 6-2 | | match details | ||
| 15.07.13 | 1/4 | Risa Ozaki | Sherazad Reix | 6-4, 6-3 | | match details | ||
| 08.07.13 | 2da ronda | Shuai Zhang | Risa Ozaki | 6-3, 6-1 | | match details | Beijing | Difícil |
| 08.07.13 | 1er ronda | Risa Ozaki | Sabina Sharipova | 6-0, 6-1 | | match details | ||
| 27.05.13 | 1/4 | Risa Ozaki | Mi Yoo | 7-5, 6-2 | | match details | Changwon | Difícil |
| 27.05.13 | 1/2 | Risa Ozaki | Xinyun Han | 6-3, 6-1 | | match details | ||
| 27.05.13 | 1er ronda | Risa Ozaki | Chin-Wei Chan | 6-2, 7-64 | | match details | ||
| 27.05.13 | fin | Risa Ozaki | Yuxuan Zhang | 6-4, 6-4 | | match details | ||
| 27.05.13 | 2da ronda | Risa Ozaki | Boyan Wang | 6-2, 6-0 | | match details | ||
| 20.05.13 | 2da ronda | Risa Ozaki | Akiko Omae | 6-4, 6-2 | | match details | Goyang | Difícil |
| 20.05.13 | 1er ronda | Risa Ozaki | Na-Ri Kim | 7-64, 6-2 | | match details | ||
| 20.05.13 | 1/4 | Yingying Duan | Risa Ozaki | 6-4, 6-4 | | match details | ||
| 18.03.13 | 1er ronda | Misa Eguchi | Risa Ozaki | 2-6, 7-64, 6-3 | | match details | Ipswich | Difícil |
| 04.02.13 | 1er ronda | Ran Tian | Risa Ozaki | 6-2, 5-7, 6-4 | | match details | Launceston | Difícil |
| 28.01.13 | 1er ronda | Risa Ozaki | Belinda Woolcock | 7-63, 2-6, 6-4 | | match details | Burnie | Difícil |
| 28.01.13 | 2da ronda | Monique Adamczak | Risa Ozaki | 6-3, 7-5 | | match details | ||
| 07.01.13 | 1er ronda | Ran Tian | Risa Ozaki | 6-4, 7-65 | | match details | Quanzhou | Difícil |
| 07.10.12 | c 2 | Shuko Aoyama | Risa Ozaki | 6-3, 0-6, 6-2 | | match details | Osaka | Difícil |
| 06.10.12 | c 1 | Risa Ozaki | Yurika Sema | 2-6, 6-3, 3-2, Yurika Sema - retirado | | match details | ||
| 27.08.12 | fin | Aki Yamasoto | Risa Ozaki | 6-3, 1-6, 6-1 | | match details | Tsukuba | Difícil |
| 27.08.12 | c 1 | Risa Ozaki | Suzuka Furukawa | 6-1, 6-2 | | match details | ||
| 27.08.12 | 1er ronda | Risa Ozaki | Luksika Kumkhum | 6-2, 5-7, 6-1 | | match details | ||
| 27.08.12 | calif. | Risa Ozaki | Kumiko Iijima | 6-4, 6-2 | | match details | ||
| 27.08.12 | 2da ronda | Risa Ozaki | Mari Tanaka | 7-5, 6-2 | | match details | ||
| 27.08.12 | 1/2 | Risa Ozaki | Qiang Wang | 6-4, 6-1 | | match details | ||
| 27.08.12 | 1/4 | Risa Ozaki | Tetiana Luzhanska | 4-6, 6-3, Tetiana Luzhanska - retirado | | match details | ||
| 30.07.12 | c 2 | Ran Tian | Risa Ozaki | 6-1, 6-4 | | match details | Beijing | Difícil |
| 30.07.12 | c 1 | Risa Ozaki | Ai Wen Zhu | 6-2, 7-5 | | match details | ||
| 23.07.12 | c 2 | Luksika Kumkhum | Risa Ozaki | 6-2, 6-3 | | match details |  Astana | Difícil |
| 23.07.12 | c 1 | Risa Ozaki | Sabina Sharipova | 7-67, 2-1, Sabina Sharipova - retirado | | match details | ||
| 30.04.12 | 1er ronda | Risa Ozaki | Emily Webley-Smith | 6-1, 6-2 | | match details | Gifu | Difícil |
| 30.04.12 | 1/4 | Kimiko Date | Risa Ozaki | 6-1, 6-1 | | match details | ||
| 30.04.12 | 2da ronda | Risa Ozaki | Chin-Wei Chan | 6-1, 6-2 | | match details | ||
| 27.02.12 | 1er ronda | Risa Ozaki | Monique Adamczak | 6-3, 7-5 | | match details | Wellington | Difícil |
| 27.02.12 | 2da ronda | Risa Ozaki | Mai Minokoshi | 6-2, 6-2 | | match details | ||
| 27.02.12 | 1/4 | Sandra Zaniewska | Risa Ozaki | 6-2, 2-6, 7-5 | | match details | ||
| 13.02.12 | calif. | Risa Ozaki | Lin Zhu | 6-4, 6-2 | | match details | Sydney | Difícil |
| 13.02.12 | 2da ronda | Risa Ozaki | Bojana Bobusic | 6-3, 4-6, 7-65 | | match details | ||
| 13.02.12 | 1/4 | Sandra Zaniewska | Risa Ozaki | 0-6, 7-66, 6-4 | | match details | ||
| 13.02.12 | c 1 | Risa Ozaki | Nana Miyakawa | 6-1, 6-1 | | match details | ||
| 13.02.12 | c 2 | Risa Ozaki | Shuko Aoyama | 6-76, 6-3, 6-2 | | match details | ||
| 13.02.12 | 1er ronda | Risa Ozaki | Erika Sema | 7-5, 6-74, 7-64 | | match details | ||
| 26.01.12 | 1/4 | Eugenie Bouchard | Risa Ozaki | 6-4, 6-3 | | match details | Australian Open | Difícil |
| 25.01.12 | 3er ronda | Risa Ozaki | Elena-Teodora Cadar | 6-2, 6-2 | | match details | ||
| 24.01.12 | 2da ronda | Risa Ozaki | Anna Danilina | 6-1, 6-4 | | match details | ||
| 22.01.12 | 1er ronda | Risa Ozaki | Eliza Long | 4-6, 6-4, 6-0 | | match details | ||
| 09.10.11 | c 2 | Yaroslava Shvedova | Risa Ozaki | 6-0, 6-2 | | match details | Osaka | Difícil |
| 08.10.11 | c 1 | Risa Ozaki | Ayumi Oka | 6-4, 6-3 | | match details | ||
| 03.10.11 | 1er ronda | Tamarine Tanasugarn | Risa Ozaki | 6-3, 6-4 | | match details | Kofu | Difícil |
| 24.09.11 | c 1 | Mandy Minella | Risa Ozaki | 6-2, 7-64 | | match details | Tokyo | Difícil |
| 08.09.11 | 3er ronda | Krista Hardebeck | Risa Ozaki | 6-1, 6-2 | | match details | U.S. Open | Difícil |
| 08.09.11 | 2da ronda | Risa Ozaki | Annika Beck | 5-7, 6-4, 6-4 | | match details | ||
| 05.09.11 | 1er ronda | Risa Ozaki | Julia Elbaba | 6-3, 6-1 | | match details | ||
| 25.04.11 | c 1 | Risa Ozaki | Moe Kawatoko | 6-0, 6-1 | | match details | Gifu | Difícil |
| 25.04.11 | c 2 | Risa Ozaki | Ksenia Lykina | 6-3, Ksenia Lykina - retirado | | match details | ||
| 25.04.11 | calif. | Hirono Watanabe | Risa Ozaki | 6-2, 2-6, 6-4 | | match details | ||
| 25.01.11 | 2da ronda | Yulia Putintseva | Risa Ozaki | 6-4, 6-3 | | match details | Australian Open | Difícil |
| 24.01.11 | 1er ronda | Risa Ozaki | Nigina Abduraimova | 7-5, 6-2 | | match details | ||
| 10.10.10 | c 1 | Noppawan Lertcheewakarn | Risa Ozaki | 6-0, 6-1 | | match details | Osaka | Difícil |
| 06.09.10 | 1er ronda | Ons Jabeur | Risa Ozaki | 6-1, 6-2 | | match details | U.S. Open | Difícil |
| 27.01.10 | 3er ronda | Karolina Pliskova | Risa Ozaki | 6-4, 6-2 | | match details | Australian Open | Difícil |
| 25.01.10 | 2da ronda | Risa Ozaki | Jana Cepelova | 6-4, 4-6, 6-2 | | match details | ||
| 24.01.10 | 1er ronda | Risa Ozaki | Briar Preston | 6-2, 6-4 | | match details | ||
| 07.09.09 | 1er ronda | Mai Grage | Risa Ozaki | 3-6, 7-64, 6-2 | | match details | U.S. Open | Difícil |