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 / año 2014 / superficie: Difícil
Riko Sawayanagi / año 2014 / superficie: Difícil
| 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 | 1/4 | Lin Zhu | Riko Sawayanagi | 6-1, 6-0 | | match details |  Xi'An | Difícil |
| 23.06.14 | 1er ronda | Riko Sawayanagi | Noppawan Lertcheewakarn | 6-3, 6-1 | | 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 | 1er ronda | Riko Sawayanagi | Da Hye Kim | 6-1, 6-3 | | match details |  Changwon | Difícil |
| 26.05.14 | 2da ronda | Su Jeong Jang | Riko Sawayanagi | 6-0, 6-2 | | 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 | 1/4 | Ling Zhang | Riko Sawayanagi | 7-5, 6-4 | | 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 | ||
| 24.03.14 | 1/2 | Miyabi Inoue | Riko Sawayanagi | 6-3, 6-4 | | match details | Nishi Tama | Difícil |
| 24.03.14 | 1er ronda | Riko Sawayanagi | Risa Ushijima | 6-2, 6-0 | | match details | ||
| 24.03.14 | 2da ronda | Riko Sawayanagi | Yuka Higuchi | 7-63, 6-1 | | 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 |