Nombre: Riko Sawayanagi
País: Japan
Fecha de nacimiento: 25.10.94, 31 años
WTA ranking: 853
TOP posición de la clasificación: 178 (05.10.15, 28500 puntos)
Puntos: 29
Dinero del premio: 187859 $
Partidos totales: 440
ganar: 245
%: 55.68 %
País: Japan
Fecha de nacimiento: 25.10.94, 31 años
WTA ranking: 853
TOP posición de la clasificación: 178 (05.10.15, 28500 puntos)
Puntos: 29
Dinero del premio: 187859 $
Partidos totales: 440
ganar: 245
%: 55.68 %
| año | resumen | Difícil | Arcilla | I. difícil | Alfombra | Césped | Acrílico |
| 2023 | 15/11 | 10/9 | 5/2 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2022 | 22/19 | 10/7 | 12/9 | 0/1 | 0/1 | 0/1 | 0/0 |
| 2021 | 19/11 | 7/4 | 12/7 | 0/0 | 0/0 | 0/0 | 0/0 |
| 2019 | 0/1 | 0/0 | 0/0 | 0/0 | 0/1 | 0/0 | 0/0 |
| 2018 | 9/8 | 6/5 | 0/0 | 0/0 | 3/2 | 0/1 | 0/0 |
| 2017 | 17/32 | 13/27 | 0/2 | 0/0 | 4/3 | 0/0 | 0/0 |
| 2016 | 44/34 | 34/25 | 1/3 | 0/1 | 9/4 | 0/1 | 0/0 |
| 2015 | 32/23 | 22/13 | 4/4 | 0/0 | 0/1 | 6/5 | 0/0 |
| 2014 | 36/20 | 20/13 | 4/1 | 0/0 | 6/2 | 6/4 | 0/0 |
| 2013 | 23/14 | 22/12 | 0/0 | 0/0 | 0/1 | 1/1 | 0/0 |
| 2012 | 11/11 | 2/5 | 0/0 | 0/0 | 3/1 | 6/5 | 0/0 |
| 2011 | 17/11 | 3/6 | 0/0 | 0/0 | 14/5 | 0/0 | 0/0 |
| TOTAL | 245/195 | 149/126 | 38/28 | 0/2 | 39/21 | 19/18 | 0/0 |
| porc. % | 55.68 % | 54.18 % | 57.58 % | 0 % | 65 % | 51.35 % | 0 % |
Riko Sawayanagi / programado / pasado
| No se encontraron partidos |
Riko Sawayanagi form / superficie: Difícil
Riko Sawayanagi / superficie: Difícil
| 07.06.23 | 1er ronda | En Shuo Liang | Riko Sawayanagi | 7-62, 6-0 |  | match details |  W25 Daegu | Difícil |
| 01.05.23 | c 1 | Honoka Kobayashi | Riko Sawayanagi | 7-62, 1-0, Riko Sawayanagi - retirado | | match details |  W80 Gifu | Difícil |
| 27.04.23 | 2da ronda | Rinon Okuwaki | Riko Sawayanagi | 3-6, 6-2, 6-3 | | match details | W15 Fukui | Difícil |
| 25.04.23 | 1er ronda | Riko Sawayanagi | Chihiro Takayama | 7-5, 6-0 |  | match details | ||
| 12.04.23 | 1er ronda | Xiaodi You | Riko Sawayanagi | 6-1, 6-1 | | match details | W25 Osaka | Difícil |
| 10.04.23 | c 2 | Riko Sawayanagi | Ai Yamaguchi | 6-2, 6-4 | | match details | ||
| 10.04.23 | calif. | Riko Sawayanagi | Gyeong Seo Lee | 6-4, 6-2 | | match details | ||
| 09.04.23 | c 1 | Riko Sawayanagi | Ayaka Ozeki | 6-0, 6-0 | | match details | ||
| 24.02.23 | 1/4 | Ayumi Koshiishi | Riko Sawayanagi | 6-3, 7-61 | | match details |  W15 Kuala | Difícil |
| 23.02.23 | 2da ronda | Riko Sawayanagi | Caroline Vernet | 6-1, 6-1 | | match details | ||
| 21.02.23 | 1er ronda | Riko Sawayanagi | Aoi Ito | 7-5, 6-0 | | match details | ||
| 16.02.23 | 2da ronda | Jaeda Daniel | Riko Sawayanagi | 7-5, 6-4 | | match details | W15 Ipoh | Difícil |
| 14.02.23 | 1er ronda | Riko Sawayanagi | Vivian Yang | 6-4, 6-0 | | match details | ||
| 09.02.23 | 2da ronda | Olivia Gadecki | Riko Sawayanagi | 6-3, 4-6, 6-2 | | match details |  W25 Burnie | Difícil |
| 07.02.23 | 1er ronda | Riko Sawayanagi | Eri Shimizu | 6-3, 7-5 | | match details | ||
| 06.02.23 | calif. | Riko Sawayanagi | Yara Bartashevich | 6-4, 6-1 | | match details | ||
| 30.01.23 | calif. | Elena Micic | Riko Sawayanagi | 2-6, 6-4, 6-3 | | match details | W60 Burnie | Difícil |
| 02.01.23 | calif. | Patcharin Cheapchadej | Riko Sawayanagi | 6-2, 6-1 | | match details |  W40 Nonthaburi | Difícil |
| 01.01.23 | c 1 | Riko Sawayanagi | Hiroko Kuwata | 7-68, 6-4 | | match details | ||
| 07.11.22 | calif. | Miyu Kato | Riko Sawayanagi | 6-3, 6-2 | | match details | W25 Yokohama | Difícil |
| 06.11.22 | c 1 | Riko Sawayanagi | Yukina Saigo | 6-1, 6-4 | | match details | ||
| 08.09.22 | 2da ronda | Junri Namigata | Riko Sawayanagi | 6-2, 3-6, 6-4 | | match details | W15 Yeongwol | Difícil |
| 07.09.22 | 1er ronda | Riko Sawayanagi | Gyeong Seo Lee | 6-3, 7-65 | | match details | ||
| 01.09.22 | 2da ronda | Dabin Kim | Riko Sawayanagi | 3-6, 7-5, 6-4 | | match details | W15 Yeongwol | Difícil |
| 30.08.22 | 1er ronda | Riko Sawayanagi | Haram Kim | 6-0, 6-2 | | match details | ||
| 25.08.22 | 2da ronda | Punnin Kovapitukted | Riko Sawayanagi | 6-4, 6-2 | | match details | W25 Goyang | Difícil |
| 23.08.22 | 1er ronda | Riko Sawayanagi | Subin Park | 6-4, 6-1 | | match details | ||
| 16.06.22 | 2da ronda | Fang Ying Xun | Riko Sawayanagi | 6-3, 6-3 | | match details | W15 Chiang | Difícil |
| 14.06.22 | 1er ronda | Riko Sawayanagi | Nana Kawagishi | 6-3, 6-3 | | match details | ||
| 07.06.22 | calif. | Eri Shimizu | Riko Sawayanagi | 3-6, 7-5, 11-9 | | match details | W25 Chiang | Difícil |
| 06.06.22 | c 2 | Riko Sawayanagi | Varunya Wongteanchai | 2-6, 7-64, 10-6 | | match details | ||
| 05.06.22 | c 1 | Riko Sawayanagi | Waraporn Muangpho | 6-0, 6-0 | | match details | ||
| 02.06.22 | 2da ronda | Haruna Arakawa | Riko Sawayanagi | 6-4, 6-0 | | match details | W25 Chiang | Difícil |
| 01.06.22 | 1er ronda | Riko Sawayanagi | Anastasia Sukhotina | 1-6, 6-1, 7-5 | | match details | ||
| 31.05.22 | calif. | Riko Sawayanagi | Nidhi Chilumula | 6-4, 6-0 | | match details | ||
| 30.05.22 | c 2 | Riko Sawayanagi | Rada Manataweewat | 6-1, 6-4 | | match details | ||
| 27.08.21 | 1/4 | Moyuka Uchijima | Riko Sawayanagi | 6-1, 6-2 | | match details |  W15 Monastir | Difícil |
| 26.08.21 | 2da ronda | Riko Sawayanagi | Ramu Ueda | 6-2, 2-6, 6-3 | | match details | ||
| 25.08.21 | 1er ronda | Riko Sawayanagi | Maria Vittoria Viviani | 6-4, 6-4 | | match details | ||
| 24.08.21 | calif. | Riko Sawayanagi | Emma Van Poppel | 6-4, 6-0 | | match details | ||
| 23.08.21 | c 2 | Riko Sawayanagi | Linda Ajimi | 6-1, 6-1 | | match details | ||
| 17.08.21 | c 2 | Aglaya Fedorova | Riko Sawayanagi | 5-7, 6-0, 10-6 | | match details | W15 Monastir | Difícil |
| 07.04.21 | 1er ronda | Sarah Beth Grey | Riko Sawayanagi | 6-4, 6-0 | | match details |  W15 Sharm | Difícil |
| 06.04.21 | calif. | Riko Sawayanagi | Alana Tuayeva | 6-2, 6-3 | | match details | ||
| 05.04.21 | c 2 | Riko Sawayanagi | Sophia Biolay | 6-4, 6-3 | | match details | ||
| 29.03.21 | c 2 | Jade Bornay | Riko Sawayanagi | 5-7, 6-3, 10-5 | | match details | W15 Sharm | Difícil |
| 28.03.21 | c 1 | Riko Sawayanagi | Katyarina Paulenka | 6-3, 6-4 | | match details | ||
| 21.08.18 | 1er ronda | Momoko Kobori | Riko Sawayanagi | 6-4, 6-3 | | match details | Tsukuba | Difícil |
| 11.03.18 | c 2 | Mayu Iwai | Riko Sawayanagi | 0-6, 6-1, 6-2 | | match details | Toyota | Difícil |
| 10.03.18 | c 1 | Riko Sawayanagi | Himari Sato | 7-5, 6-0 | | match details | ||
| 18.02.18 | c 2 | Riko Sawayanagi | Ramu Ueda | 6-3, 7-5 | | match details | Perth | Difícil |
| 18.02.18 | calif. | Lulu Sun | Riko Sawayanagi | 6-2, 6-3 | | match details | ||
| 14.02.18 | 2da ronda | Mai Minokoshi | Riko Sawayanagi | 6-1, 6-1 | | match details | Perth | Difícil |
| 13.02.18 | 1er ronda | Riko Sawayanagi | Miharu Imanishi | 6-3, 2-0, Miharu Imanishi - retirado | | match details | ||
| 11.02.18 | c 2 | Riko Sawayanagi | Elizabeth James | 6-1, 6-1 | | match details | ||
| 11.02.18 | calif. | Riko Sawayanagi | Maryna Chernyshova | 6-4, 6-2 | | match details | ||
| 07.02.18 | 1er ronda | Alexandra Bozovic | Riko Sawayanagi | 6-0, 6-3 | | match details | Launceston | Difícil |
| 05.02.18 | calif. | Riko Sawayanagi | Nagi Hanatani | 6-4, 6-3 | | match details | ||
| 30.11.17 | 1er ronda | Jing-Jing Lu | Riko Sawayanagi | 5-3, Riko Sawayanagi - retirado | | match details |  Australian Open | Difícil |
| 08.11.17 | 1er ronda | Tori Kinard | Riko Sawayanagi | 7-65, 6-4 | | match details | Tokyo | Difícil |
| 27.10.17 | 1/4 | Xinyun Han | Riko Sawayanagi | 6-4, 4-6, 6-2 | | match details | Liuzhou | Difícil |
| 26.10.17 | 2da ronda | Riko Sawayanagi | Miyu Kato | 1-2, Miyu Kato - retirado | | match details | ||
| 24.10.17 | 1er ronda | Riko Sawayanagi | Jia Qi Kang | 6-4, 6-2 | | match details | ||
| 19.10.17 | 2da ronda | Jing-Jing Lu | Riko Sawayanagi | 6-1, 6-4 | | match details | Suzhou | Difícil |
| 18.10.17 | 1er ronda | Riko Sawayanagi | Laura Robson | 3-6, 6-4, 7-5 | | match details | ||
| 07.10.17 | c 1 | Alexa Guarachi | Riko Sawayanagi | 6-4, 6-3 | | match details |  Hong Kong | Difícil |
| 27.09.17 | 2da ronda | Yue Yuan | Riko Sawayanagi | 6-0, 6-2 | | match details | Hua Hin | Difícil |
| 25.09.17 | 1er ronda | Riko Sawayanagi | Punnin Kovapitukted | 6-4, 6-2 | | match details | ||
| 17.09.17 | calif. | Lesley Pattinama Kerkhove | Riko Sawayanagi | 6-1, 7-5 | | match details | Guangzhou | Difícil |
| 16.09.17 | c 1 | Riko Sawayanagi | Xuliu Sun | 6-3, 6-4 | | match details | ||
| 09.09.17 | c 1 | Basak Eraydin | Riko Sawayanagi | 4-6, 7-64, 6-3 | | match details | Tokyo | Difícil |
| 06.09.17 | 1er ronda | Vitalia Diatchenko | Riko Sawayanagi | 6-4, 6-4 | | match details | Dalian | Difícil |
| 24.08.17 | c 2 | Allie Kiick | Riko Sawayanagi | 6-4, 6-3 | | match details |  New York | Difícil |
| 22.08.17 | c 1 | Riko Sawayanagi | Asia Muhammad | 2-6, 7-67, 6-3 | | match details | ||
| 22.07.17 | c 1 | Xiaodi You | Riko Sawayanagi | 3-6, 6-2, 6-1 | | match details | Nanchang | Difícil |
| 20.07.17 | 2da ronda | Jing-Jing Lu | Riko Sawayanagi | 3-6, 6-2, 7-5 | | match details | Tianjin | Difícil |
| 17.07.17 | 1er ronda | Riko Sawayanagi | Jia Qi Ren | 6-0, 6-1 | | match details | ||
| 09.07.17 | 1er ronda | Jing-Jing Lu | Riko Sawayanagi | 6-2, 5-7, 6-4 | | match details | Naiman | Difícil |
| 14.06.17 | 1er ronda | Riko Sawayanagi | Reina Takahashi | 6-4, 6-4 | | match details | Kofu | Difícil |
| 14.06.17 | 2da ronda | Erina Hayashi | Riko Sawayanagi | 6-4, 6-1 | | match details | ||
| 02.05.17 | 1er ronda | Arina Rodionova | Riko Sawayanagi | 2-6, 6-3, 7-5 | | match details | Gifu | Difícil |
| 19.04.17 | 2da ronda | Shuai Peng | Riko Sawayanagi | 6-1, 6-4 | | match details | Zhengzhou | Difícil |
| 18.04.17 | 1er ronda | Riko Sawayanagi | Miyu Kato | 7-64, 6-0 | | match details | ||
| 11.04.17 | 1er ronda | Qianhui Tang | Riko Sawayanagi | 6-1, 7-5 | | match details | Nanning | Difícil |
| 05.04.17 | 1er ronda | Makoto Ninomiya | Riko Sawayanagi | 5-7, 6-3, 6-3 | | match details | Kashiwa | Difícil |
| 30.03.17 | 2da ronda | Riko Sawayanagi | Chihiro Muramatsu | 6-3, 6-3 | | match details | Kofu | Difícil |
| 30.03.17 | 1/4 | Na-Lae Han | Riko Sawayanagi | 6-2, 6-2 | | match details | ||
| 27.03.17 | 1er ronda | Riko Sawayanagi | Yumeko Yoshitomi | 6-3, 6-0 | | match details | ||
| 13.03.17 | c 1 | Riko Sawayanagi | Qiu Yu Ye | 3-6, 6-4, 6-2 | | match details | Shenzhen | Difícil |
| 13.03.17 | c 2 | Haochen Tang | Riko Sawayanagi | 7-67, 7-5 | | match details | ||
| 06.03.17 | c 1 | Riko Sawayanagi | Julia Glushko | 6-3, 7-67 | | match details | Zhuhai | Difícil |
| 06.03.17 | c 2 | Vera Lapko | Riko Sawayanagi | 6-1, 6-0 | | match details | ||
| 21.02.17 | 1er ronda | Georgia Brescia | Riko Sawayanagi | 2-6, 6-2, 6-2 | | match details | Perth | Difícil |
| 15.02.17 | 1er ronda | Katie Boulter | Riko Sawayanagi | 6-1, 6-4 | | match details | Perth | Difícil |
| 08.02.17 | 1er ronda | Marie Bouzkova | Riko Sawayanagi | 6-2, 6-0 | | match details | Launceston | Difícil |
| 31.01.17 | 1er ronda | Jamie Loeb | Riko Sawayanagi | 6-0, 6-1 | | match details | Burnie | Difícil |
| 12.01.17 | c 1 | Aliaksandra Sasnovich | Riko Sawayanagi | 2-6, 6-2, 6-2 | | match details | Melbourne | Difícil |
| 03.01.17 | 1er ronda | Olga Doroshina | Riko Sawayanagi | 6-2, 6-1 | | match details | Hong Kong | Difícil |
| 12.12.16 | c 2 | Valeria Savinykh | Riko Sawayanagi | 7-5, 6-1 | | match details |  Dubai | Difícil |
| 12.12.16 | c 1 | Riko Sawayanagi | Gabriela Pantuckova | 6-4, 6-1 | | match details | ||
| 12.11.16 | fin | Irina Khromacheva | Riko Sawayanagi | 6-1, 6-1 | | match details |  Pune | Difícil |
| 11.11.16 | 1/2 | Riko Sawayanagi | Conny Perrin | 6-1, 6-3 | | match details | ||
| 10.11.16 | 1/4 | Riko Sawayanagi | Tadeja Majeric | 6-3, 7-65 | | match details | ||
| 09.11.16 | 2da ronda | Riko Sawayanagi | Tereza Mrdeza | 6-3, 7-65 | | match details | ||
| 08.11.16 | 1er ronda | Riko Sawayanagi | Nudnida Luangnam | 6-2, 7-5 | | match details | ||
| 04.11.16 | 1/2 | Riko Sawayanagi | Ying Zhang | 5-7, 6-2, 6-0 | | match details | Chenzhou | Difícil |
| 04.11.16 | fin | Dalma Galfi | Riko Sawayanagi | 6-0, 6-4 | | match details | ||
| 03.11.16 | 2da ronda | Riko Sawayanagi | Angelina Gabueva | 6-3, 6-2 | | match details | ||
| 03.11.16 | 1/4 | Riko Sawayanagi | Katarzyna Piter | 6-2, 6-3 | | match details | ||
| 02.11.16 | 1er ronda | Riko Sawayanagi | Katharina Lehnert | 6-4, 6-3 | | match details | ||
| 26.10.16 | 1er ronda | Kai-Chen Chang | Riko Sawayanagi | 4-6, 6-2, 6-1 | | match details | Liuzhou | Difícil |
| 01.10.16 | 1/2 | Su Jeong Jang | Riko Sawayanagi | 6-2, 6-1 | | match details | Iizuka | Difícil |
| 01.10.16 | 1/4 | Riko Sawayanagi | Ayano Shimizu | 6-4, 7-5 | | match details | ||
| 30.09.16 | 2da ronda | Riko Sawayanagi | Haruka Kaji | 6-2, 6-3 | | match details | ||
| 28.09.16 | 1er ronda | Riko Sawayanagi | Mana Ayukawa | 6-2, 6-4 | | match details | ||
| 18.09.16 | c 2 | Katarzyna Piter | Riko Sawayanagi | 6-3, 6-74, 6-2 | | match details | Seoul | Difícil |
| 17.09.16 | c 1 | Riko Sawayanagi | Sung-Hee Han | 6-4, 6-4 | | match details | ||
| 09.09.16 | c 1 | Rebecca Peterson | Riko Sawayanagi | 7-63, 6-1 | | match details | Tokyo | Difícil |
| 26.08.16 | 1/4 | Peangtarn Plipuech | Riko Sawayanagi | 2-6, 6-3, 7-61 | | match details | Tsukuba | Difícil |
| 25.08.16 | 2da ronda | Riko Sawayanagi | Yuuki Tanaka | 6-1, 3-6, 6-2 | | match details | ||
| 24.08.16 | 1er ronda | Riko Sawayanagi | Miki Miyamura | 6-4, 6-75, 6-2 | | match details | ||
| 28.07.16 | 2da ronda | Arina Rodionova | Riko Sawayanagi | 6-1, 6-4 | | match details | Lexington | Difícil |
| 27.07.16 | 1er ronda | Riko Sawayanagi | Miyu Kato | 7-65, 6-4 | | match details | ||
| 21.07.16 | 2da ronda | An-Sophie Mestach | Riko Sawayanagi | 6-3, 6-2 | | match details | Sacramento | Difícil |
| 20.07.16 | 1er ronda | Riko Sawayanagi | Alexandra Stevenson | 6-4, 6-0 | | match details | ||
| 14.07.16 | 2da ronda | Alison Van Uytvanck | Riko Sawayanagi | 6-2, 6-0 | | match details | Stockton | Difícil |
| 12.07.16 | 1er ronda | Riko Sawayanagi | Kristie Ahn | 6-4, 4-6, 6-4 | | match details | ||
| 29.06.16 | 1er ronda | Caitlin Whoriskey | Riko Sawayanagi | 4-6, 6-2, 6-0 | | match details | El Paso | Difícil |
| 25.06.16 | 1/2 | Valeriya Solovyeva | Riko Sawayanagi | 6-2, 6-3 | | match details | Baton Rouge | Difícil |
| 24.06.16 | 1/4 | Riko Sawayanagi | Francoise Abanda | 6-4, 6-1 | | match details | ||
| 23.06.16 | 2da ronda | Riko Sawayanagi | Carol Zhao | 6-2, 6-2 | | match details | ||
| 22.06.16 | 1er ronda | Riko Sawayanagi | Ronit Yurovsky | 6-1, 6-3 | | match details | ||
| 16.06.16 | 2da ronda | Caroline Dolehide | Riko Sawayanagi | 6-2, 6-3 | | match details | Sumter | Difícil |
| 14.06.16 | 1er ronda | Riko Sawayanagi | Ashley Weinhold | 6-4, 3-6, 6-3 | | match details | ||
| 07.06.16 | 1er ronda | Peangtarn Plipuech | Riko Sawayanagi | 7-5, 7-5 | | match details | Tokyo | Difícil |
| 26.05.16 | 2da ronda | Lauren Albanese | Riko Sawayanagi | 6-3, 6-3 | | match details | Tianjin | Difícil |
| 25.05.16 | 1er ronda | Riko Sawayanagi | Xinyu Jiang | 6-1, 6-4 | | match details | ||
| 05.05.16 | 2da ronda | Riko Sawayanagi | Luksika Kumkhum | 7-66, 4-6, 7-65 | | match details | Gifu | Difícil |
| 05.05.16 | 1/4 | Hiroko Kuwata | Riko Sawayanagi | 6-0, 6-3 | | match details | ||
| 03.05.16 | 1er ronda | Riko Sawayanagi | Ayaka Okuno | 6-2, 6-1 | | match details | ||
| 22.04.16 | 1/4 | Kai-Lin Zhang | Riko Sawayanagi | 6-3, 6-3 | | match details | Nanning | Difícil |
| 21.04.16 | 2da ronda | Riko Sawayanagi | Shilin Xu | 6-3, 0-6, 6-3 | | match details | ||
| 20.04.16 | 1er ronda | Riko Sawayanagi | Jiaxi Lu | 7-5, 6-1 | | match details | ||
| 14.04.16 | 1/4 | Qiang Wang | Riko Sawayanagi | 6-1, 6-2 | | match details | Shenzhen | Difícil |
| 13.04.16 | 2da ronda | Riko Sawayanagi | Chen Liang | 6-4, 6-4 | | match details | ||
| 11.04.16 | 1er ronda | Riko Sawayanagi | Miharu Imanishi | 6-1, 7-64 | | match details | ||
| 08.04.16 | 1/4 | Mayo Hibi | Riko Sawayanagi | 7-64, 1-6, 6-3 | | match details | Kashiwa | Difícil |
| 06.04.16 | 2da ronda | Riko Sawayanagi | Luksika Kumkhum | 7-68, 6-2 | | match details | ||
| 04.04.16 | 1er ronda | Riko Sawayanagi | Mana Ayukawa | 6-3, 6-3 | | match details | ||
| 30.03.16 | 1er ronda | Na-Lae Han | Riko Sawayanagi | 6-4, 7-64 | | match details | Kofu | Difícil |
| 23.03.16 | 1er ronda | Yuxuan Zhang | Riko Sawayanagi | 6-3, 6-2 | | match details | Quanzhou | Difícil |
| 26.02.16 | 1/2 | Arina Rodionova | Riko Sawayanagi | 2-6, 6-2, 6-2 | | match details | Port Pirie | Difícil |
| 25.02.16 | 2da ronda | Riko Sawayanagi | Anastasia Pivovarova | 6-4, 6-3 | | match details | ||
| 25.02.16 | 1/4 | Riko Sawayanagi | Zuzana Zlochova | 6-4, 6-1 | | match details | ||
| 23.02.16 | 1er ronda | Riko Sawayanagi | Yuuki Tanaka | 6-4, 6-0 | | match details | ||
| 17.02.16 | 1er ronda | Barbora Stefkova | Riko Sawayanagi | 7-5, 6-4 | | match details | Perth | Difícil |
| 04.01.16 | 1er ronda | Viktorija Golubic | Riko Sawayanagi | 6-4, 6-75, 6-2 | | match details | Hong Kong | Difícil |
| 28.09.15 | 1er ronda | Riko Sawayanagi | Ran Tian | 3-6, 6-2, 6-0 | | match details | Zhuhai | Difícil |
| 28.09.15 | 1/4 | Ling Zhang | Riko Sawayanagi | 1-6, 6-2, 6-4 | | match details | ||
| 28.09.15 | 2da ronda | Riko Sawayanagi | Kai-Lin Zhang | 7-5, 6-4 | | match details | ||
| 20.09.15 | c 2 | Ana Konjuh | Riko Sawayanagi | 6-1, 6-4 | | match details | Tokyo | Difícil |
| 19.09.15 | c 1 | Riko Sawayanagi | Eri Shimizu | 6-3, 6-1 | | match details | ||
| 12.09.15 | c 1 | Zhaoxuan Yang | Riko Sawayanagi | 6-2, 2-6, 6-3 | | match details | Tokyo | Difícil |
| 09.09.15 | 1er ronda | Julia Glushko | Riko Sawayanagi | 6-2, 6-3 | | match details | Dalian | Difícil |
| 25.08.15 | c 1 | Donna Vekic | Riko Sawayanagi | 3-6, 7-5, 6-4 | | match details | New York | Difícil |
| 17.08.15 | c 2 | Kateryna Baindl | Riko Sawayanagi | 6-2, 6-4 | | match details |  Vancouver | Difícil |
| 17.08.15 | c 1 | Riko Sawayanagi | Kimiko Date | Kimiko Date - walk over | | match details | ||
| 29.07.15 | 1er ronda | Jelena Jankovic | Riko Sawayanagi | 6-2, 6-1 | | match details | Nanchang | Difícil |
| 13.07.15 | 2da ronda | Riko Sawayanagi | Nicha Lertpitaksinchai | 6-2, 6-4 | | match details | Bangkok | Difícil |
| 13.07.15 | 1/2 | Miyu Kato | Riko Sawayanagi | 6-2, 6-4 | | match details | ||
| 13.07.15 | 1/4 | Riko Sawayanagi | Nungnadda Wannasuk | 6-2, 6-1 | | match details | ||
| 13.07.15 | 1er ronda | Riko Sawayanagi | Mizuno Kijima | 6-1, 6-0 | | match details | ||
| 06.07.15 | 1/4 | Kai-Lin Zhang | Riko Sawayanagi | 1-6, 7-62, 6-1 | | match details | Bangkok | Difícil |
| 06.07.15 | 1er ronda | Riko Sawayanagi | Mai Minokoshi | 6-3, 2-6, 7-63 | | match details | ||
| 06.07.15 | 2da ronda | Riko Sawayanagi | Kyoka Okamura | 7-5, 6-72, 6-4 | | match details | ||
| 08.06.15 | 2da ronda | Riko Sawayanagi | Yurika Sema | 6-1, 6-2 | | match details | Kashiwa | Difícil |
| 08.06.15 | 1/4 | Riko Sawayanagi | Kyoka Okamura | 6-3, 2-6, 6-0 | | match details | ||
| 08.06.15 | fin | Erika Sema | Riko Sawayanagi | 6-4, 6-2 | | match details | ||
| 08.06.15 | 1/2 | Riko Sawayanagi | Ching-Wen Hsu | 7-5, 6-3 | | match details | ||
| 08.06.15 | 1er ronda | Riko Sawayanagi | Shiori Fukuda | 6-3, 6-2 | | match details | ||
| 25.05.15 | 2da ronda | Sung-Hee Han | Riko Sawayanagi | 6-3, 6-1 | | match details | Changwon | Difícil |
| 25.05.15 | 1er ronda | Riko Sawayanagi | Makoto Ninomiya | 6-1, 6-2 | | match details | ||
| 18.05.15 | 1/2 | Riko Sawayanagi | Varatchaya Wongteanchai | 6-4, 6-3 | | match details | Seoul | Difícil |
| 18.05.15 | 1er ronda | Riko Sawayanagi | Ekaterina Yashina | 6-1, 6-3 | | match details | ||
| 18.05.15 | fin | Riko Sawayanagi | Su Jeong Jang | 6-4, 6-4 | | match details | ||
| 18.05.15 | 2da ronda | Riko Sawayanagi | Ye-Ra Lee | 6-4, 6-4 | | match details | ||
| 18.05.15 | 1/4 | Riko Sawayanagi | Kristie Ahn | 1-6, 7-66, 6-3 | | match details | ||
| 27.04.15 | 1er ronda | Erika Sema | Riko Sawayanagi | 4-6, 6-0, 6-2 | | match details | Gifu | Difícil |
| 16.02.15 | 1er ronda | Riko Sawayanagi | Emily Webley-Smith | 7-61, 6-1 | | match details | New Delhi | Difícil |
| 16.02.15 | 2da ronda | Riko Sawayanagi | Luksika Kumkhum | 7-65, 6-2 | | match details | ||
| 16.02.15 | 1/2 | Tadeja Majeric | Riko Sawayanagi | 6-1, 6-2 | | match details | ||
| 16.02.15 | 1/4 | Riko Sawayanagi | Olga Savchuk | 6-1, 1-6, 6-1 | | match details | ||
| 05.10.14 | c 2 | Hiroko Kuwata | Riko Sawayanagi | 2-6, 6-1, 6-1 | | match details | Osaka | Difícil |
| 04.10.14 | c 1 | Riko Sawayanagi | Makoto Ninomiya | 3-6, 7-65, 6-4 | | match details | ||
| 14.09.14 | c 2 | Anastasia Rodionova | Riko Sawayanagi | 6-74, 6-4, 6-0 | | match details | Tokyo | Difícil |
| 13.09.14 | c 1 | Riko Sawayanagi | Miyu Kato | 6-3, 4-0, Miyu Kato - retirado | | match details | ||
| 25.08.14 | 1er ronda | Kai-Chen Chang | Riko Sawayanagi | 7-62, 1-6, 6-1 | | match details | Tsukuba | Difícil |
| 28.07.14 | c 1 | Caitlin Whoriskey | Riko Sawayanagi | 6-3, 6-4 | | match details | Vancouver | Difícil |
| 21.07.14 | c 1 | Sherazad Reix | Riko Sawayanagi | 6-0, 6-2 | | match details | Lexington | Difícil |
| 14.07.14 | 2da ronda | Riko Sawayanagi | Gloria Liang | 0-6, 6-3, 6-2 | | match details | Granby | Difícil |
| 14.07.14 | 1/4 | Miharu Imanishi | Riko Sawayanagi | 7-61, 6-4 | | match details | ||
| 14.07.14 | 1er ronda | Riko Sawayanagi | Samantha Murray | 3-6, 6-4, 6-4 | | match details | ||
| 23.06.14 | 1er ronda | Riko Sawayanagi | Noppawan Lertcheewakarn | 6-3, 6-1 | | match details | Xi'An | Difícil |
| 23.06.14 | 1/4 | Lin Zhu | Riko Sawayanagi | 6-1, 6-0 | | match details | ||
| 23.06.14 | 2da ronda | Riko Sawayanagi | Kai-Lin Zhang | 6-2, 6-2 | | match details | ||
| 09.06.14 | 2da ronda | Riko Sawayanagi | Makoto Ninomiya | 6-4, 6-4 | | match details | Kashiwa | Difícil |
| 09.06.14 | 1/4 | Riko Sawayanagi | Mizuno Kijima | 6-3, 6-0 | | match details | ||
| 09.06.14 | 1/2 | Riko Sawayanagi | Mana Ayukawa | 6-2, 6-4 | | match details | ||
| 09.06.14 | 1er ronda | Riko Sawayanagi | Aki Yamasoto | 6-4, 4-6, 6-1 | | match details | ||
| 09.06.14 | fin | Riko Sawayanagi | Junri Namigata | 6-4, 7-65 | | match details | ||
| 26.05.14 | 2da ronda | Su Jeong Jang | Riko Sawayanagi | 6-0, 6-2 | | match details | Changwon | Difícil |
| 26.05.14 | 1er ronda | Riko Sawayanagi | Da Hye Kim | 6-1, 6-3 | | match details | ||
| 21.04.14 | calif. | Riko Sawayanagi | Akari Inoue | 6-4, 6-2 | | match details | Nanning | Difícil |
| 21.04.14 | 1er ronda | Riko Sawayanagi | Xinyun Han | 6-1, 6-3 | | match details | ||
| 21.04.14 | 2da ronda | Riko Sawayanagi | Tadeja Majeric | 6-2, 2-6, 6-2 | | match details | ||
| 21.04.14 | c 2 | Riko Sawayanagi | Shangqing Yang | 6-1, 6-3 | | match details | ||
| 21.04.14 | 1/4 | Ling Zhang | Riko Sawayanagi | 7-5, 6-4 | | match details | ||
| 24.03.14 | 1er ronda | Riko Sawayanagi | Risa Ushijima | 6-2, 6-0 | | match details | Nishi Tama | Difícil |
| 24.03.14 | 2da ronda | Riko Sawayanagi | Yuka Higuchi | 7-63, 6-1 | | match details | ||
| 24.03.14 | 1/2 | Miyabi Inoue | Riko Sawayanagi | 6-3, 6-4 | | match details | ||
| 24.03.14 | 1/4 | Riko Sawayanagi | Chiaki Okadaue | 6-2, 6-2 | | match details | ||
| 17.03.14 | 1er ronda | Mana Ayukawa | Riko Sawayanagi | 7-5, 6-4 | | match details | Kofu | Difícil |
| 27.01.14 | 1er ronda | Jia-Jing Lu | Riko Sawayanagi | 6-4, 6-2 | | match details |  Tinajo | Difícil |
| 20.01.14 | 2da ronda | Ioana Loredana Rosca | Riko Sawayanagi | 4-6, 6-2, 6-2 | | match details | Tinajo | Difícil |
| 20.01.14 | 1er ronda | Riko Sawayanagi | Amandine Cazeaux | 6-3, 6-0 | | match details | ||
| 16.12.13 | 1er ronda | Heidi El Tabakh | Riko Sawayanagi | 7-62, 6-1 | | match details |  Merida | Difícil |
| 16.12.13 | calif. | Riko Sawayanagi | Gloria Liang | 4-6, 6-3, 6-4 | | match details | ||
| 09.12.13 | calif. | Alejandra Cisneros | Riko Sawayanagi | 2-6, 7-5, 6-2 | | match details | Merida | Difícil |
| 09.12.13 | c 2 | Riko Sawayanagi | Mariaryeni Gutierrez | 6-1, 6-0 | | match details | ||
| 02.12.13 | 1er ronda | Riko Sawayanagi | Laura Pigossi | 6-4, 6-1 | | match details | Merida | Difícil |
| 02.12.13 | c 1 | Riko Sawayanagi | Rosalia Alda | 6-1, 7-69 | | match details | ||
| 02.12.13 | 2da ronda | Maria Irigoyen | Riko Sawayanagi | 1-6, 6-4, 6-1 | | match details | ||
| 02.12.13 | calif. | Riko Sawayanagi | Elisabeth Fournier | 6-3, 6-4 | | match details | ||
| 26.08.13 | 2da ronda | Riko Sawayanagi | Suzuka Furukawa | 6-3, 6-1 | | match details | Tsukuba | Difícil |
| 26.08.13 | 1er ronda | Riko Sawayanagi | Storm Hunter | 6-4, 6-4 | | match details | ||
| 26.08.13 | c 1 | Riko Sawayanagi | Yuka Mori | 6-1, 6-0 | | match details | ||
| 26.08.13 | 1/4 | Nao Hibino | Riko Sawayanagi | 6-2, 6-2 | | match details | ||
| 26.08.13 | calif. | Riko Sawayanagi | Ya-Hsuan Lee | 6-1, 6-2 | | match details | ||
| 29.07.13 | 2da ronda | Veronica Corning | Riko Sawayanagi | 6-3, 6-4 | | match details | Fort Worth | Difícil |
| 29.07.13 | 1er ronda | Riko Sawayanagi | Ashley Murdock | 6-3, 6-1 | | match details | ||
| 22.07.13 | 1er ronda | Riko Sawayanagi | Sonja Molnar | 6-4, 6-2 | | match details | Winnipeg | Difícil |
| 22.07.13 | calif. | Riko Sawayanagi | Lauren Chypyha | 6-2, 6-2 | | match details | ||
| 22.07.13 | 2da ronda | Samantha Murray | Riko Sawayanagi | 7-5, 6-3 | | match details | ||
| 15.07.13 | c 1 | Riko Sawayanagi | Maja Vujic | 6-2, 6-0 | | match details | Granby | Difícil |
| 15.07.13 | calif. | Riko Sawayanagi | Gloria Liang | 7-5, 4-6, 6-2 | | match details | ||
| 15.07.13 | 1/4 | Samantha Murray | Riko Sawayanagi | 6-1, 6-1 | | match details | ||
| 15.07.13 | 2da ronda | Riko Sawayanagi | Jade Windley | 6-3, 7-5 | | match details | ||
| 15.07.13 | 1er ronda | Riko Sawayanagi | Lena Litvak | 6-4, 7-5 | | match details | ||
| 24.06.13 | 1/4 | Ling Zhang | Riko Sawayanagi | 6-4, 7-64 | | match details | Gimcheon | Difícil |
| 24.06.13 | 1er ronda | Riko Sawayanagi | Suyeon Choi | 6-1, 6-1 | | match details | ||
| 24.06.13 | 2da ronda | Riko Sawayanagi | Hye-Min Lee | 7-67, 6-4 | | match details | ||
| 17.06.13 | 2da ronda | Na-Ri Kim | Riko Sawayanagi | 6-1, 6-2 | | match details | Gimcheon | Difícil |
| 17.06.13 | 1er ronda | Riko Sawayanagi | Ji-Hee Choi | 6-0, 6-1 | | match details | ||
| 10.06.13 | 1er ronda | Su Jeong Jang | Riko Sawayanagi | 0-6, 6-4, 6-2 | | match details | Gimcheon | Difícil |
| 29.04.13 | calif. | Yue-Yue Hu | Riko Sawayanagi | 1-6, 6-3, 6-0 | | match details | Gifu | Difícil |
| 29.04.13 | c 1 | Riko Sawayanagi | Yumi Miyazaki | 6-4, 4-6, 6-4 | | match details | ||
| 29.04.13 | c 2 | Riko Sawayanagi | Emily Webley-Smith | 6-1, 6-0 | | match details | ||
| 18.03.13 | 1er ronda | Riko Sawayanagi | Kazusa Ito | 6-3, 6-3 | | match details | Kofu | Difícil |
| 18.03.13 | 2da ronda | Hiroko Kuwata | Riko Sawayanagi | 6-3, 6-3 | | match details | ||
| 06.10.12 | c 1 | Yi-Miao Zhou | Riko Sawayanagi | 7-68, 6-2 | | match details | Osaka | Difícil |
| 09.07.12 | 2da ronda | Su Jeong Jang | Riko Sawayanagi | Riko Sawayanagi - walk over | | match details | Pattaya | Difícil |
| 09.07.12 | 1er ronda | Riko Sawayanagi | Varunya Wongteanchai | 6-2, 6-3 | | match details | ||
| 27.02.12 | 1er ronda | Sacha Jones | Riko Sawayanagi | 6-72, 6-2, 6-1 | | match details |  Wellington | Difícil |
| 13.02.12 | c 1 | Riko Sawayanagi | Leah Daw | 6-1, 6-1 | | match details | Sydney | Difícil |
| 13.02.12 | c 2 | Mervana Jugic-Salkic | Riko Sawayanagi | 6-3, 6-4 | | match details | ||
| 23.01.12 | 1er ronda | Saisai Zheng | Riko Sawayanagi | 6-4, 6-1 | | match details | Australian Open | Difícil |
| 03.10.11 | 2da ronda | Akiko Omae | Riko Sawayanagi | 7-5, 6-76, 7-62 | | match details | Kofu | Difícil |
| 03.10.11 | 1er ronda | Riko Sawayanagi | Aiko Nakamura | 1-6, 6-4, 6-3 | | match details | ||
| 23.09.11 | c 1 | Urszula Radwanska | Riko Sawayanagi | 6-4, 6-4 | | match details | Tokyo | Difícil |
| 29.08.11 | calif. | Yue-Yue Hu | Riko Sawayanagi | 3-6, 6-4, 6-1 | | match details | Tsukuba | Difícil |
| 29.08.11 | c 1 | Riko Sawayanagi | Ayumi Oka | 7-5, 2-6, 7-62 | | match details | ||
| 06.06.11 | 1er ronda | Riko Sawayanagi | Makiho Kozawa | 1-6, 6-3, 6-4 | | match details | Tokyo | Difícil |
| 06.06.11 | 2da ronda | Akiko Omae | Riko Sawayanagi | 6-1, 6-3 | | match details | ||
| 23.05.11 | c 1 | Miharu Imanishi | Riko Sawayanagi | 3-6, 6-1, 6-1 | | match details | Niigata | Difícil |
| 23.01.11 | 1er ronda | So-Ra Lee | Riko Sawayanagi | 6-1, 6-1 | | match details | Australian Open | Difícil |