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: Césped
Riko Sawayanagi / superficie: Césped
| 04.10.22 | 1er ronda | Ikumi Yamazaki | Riko Sawayanagi | 4-6, 6-3, 2-0, Riko Sawayanagi - retirado |  | match details |  W25 Makinohara | Césped |
| 06.03.18 | 1er ronda | Maddison Inglis | Riko Sawayanagi | 6-0, 6-2 | | match details |  Mildura | Césped |
| 01.03.16 | 1er ronda | Kyoka Okamura | Riko Sawayanagi | 3-6, 6-3, 4-2, Riko Sawayanagi - retirado | | match details | Mildura | Césped |
| 19.10.15 | 2da ronda | Riko Sawayanagi | Risa Ushijima | 6-3, 7-64 |  | match details | Hamamatsu | Césped |
| 19.10.15 | 1er ronda | Riko Sawayanagi | Miki Miyamura | 7-65, 6-1 | | match details | ||
| 19.10.15 | 1/4 | Ayaka Okuno | Riko Sawayanagi | 3-6, 6-4, 6-2 | | match details | ||
| 12.10.15 | 1/4 | Riko Sawayanagi | Yuuki Tanaka | 6-3, 6-1 | | match details | Makinohara | Césped |
| 12.10.15 | 1/2 | Riko Sawayanagi | Shuko Aoyama | 6-0, 6-2 | | match details | ||
| 12.10.15 | fin | Katarzyna Kawa | Riko Sawayanagi | 6-76, 6-2, 7-66 | | match details | ||
| 12.10.15 | 1er ronda | Riko Sawayanagi | Kotomi Takahata | 6-2, 6-3 | | match details | ||
| 12.10.15 | 2da ronda | Riko Sawayanagi | Sachie Ishizu | 6-1, 6-4 | | match details | ||
| 23.06.15 | c 1 | Richel Hogenkamp | Riko Sawayanagi | 6-2, 6-2 | | match details |  London | Césped |
| 11.05.15 | 1er ronda | Nao Hibino | Riko Sawayanagi | 6-3, 6-2 | | match details | Kurume | Césped |
| 04.05.15 | 1er ronda | Erika Sema | Riko Sawayanagi | 6-1, 6-3 | | match details | Fukuoka | Césped |
| 13.10.14 | 2da ronda | Riko Sawayanagi | Kanae Hisami | 7-611, 6-3 | | match details | Makinohara | Césped |
| 13.10.14 | 1/4 | Riko Sawayanagi | Indy De Vroome | 6-4, 6-2 | | match details | ||
| 13.10.14 | 1/2 | Tatjana Maria | Riko Sawayanagi | 6-2, 6-2 | | match details | ||
| 13.10.14 | 1er ronda | Riko Sawayanagi | Makoto Ninomiya | 6-3, 4-6, 6-2 | | match details | ||
| 19.05.14 | 2da ronda | Su Jeong Jang | Riko Sawayanagi | 6-1, 6-1 | | match details | Karuizawa | Césped |
| 19.05.14 | calif. | Riko Sawayanagi | Yoshimi Kawasaki | 6-3, 6-1 | | match details | ||
| 19.05.14 | 1er ronda | Riko Sawayanagi | Emily Webley-Smith | 6-1, 6-2 | | match details | ||
| 12.05.14 | c 2 | Tori Kinard | Riko Sawayanagi | 7-5, 0-6, 6-4 | | match details | Kurume | Césped |
| 12.05.14 | c 1 | Riko Sawayanagi | Mari Osaka | 6-0, 7-5 | | match details | ||
| 05.05.14 | 1er ronda | Nao Hibino | Riko Sawayanagi | 6-3, 7-5 | | match details | Fukuoka | Césped |
| 02.09.13 | calif. | Miyu Kato | Riko Sawayanagi | 6-75, 6-4, 7-61 | | match details | Noto | Césped |
| 02.09.13 | c 2 | Riko Sawayanagi | Momoko Sonoda | 6-2, 7-5 | | match details | ||
| 22.10.12 | 2da ronda | Riko Sawayanagi | Shiho Akita | 6-2, 6-0 | | match details | Hamamatsu | Césped |
| 22.10.12 | 1/4 | Shuko Aoyama | Riko Sawayanagi | 2-6, 6-3, 6-0 | | match details | ||
| 22.10.12 | 1er ronda | Riko Sawayanagi | Junri Namigata | 2-1, Junri Namigata - retirado | | match details | ||
| 15.10.12 | 1er ronda | Julia Glushko | Riko Sawayanagi | 6-4, 6-3 | | match details | Makinohara | Césped |
| 14.05.12 | 2da ronda | Maria Abramovic | Riko Sawayanagi | 6-2, 6-0 | | match details | Kurume | Césped |
| 14.05.12 | 1er ronda | Riko Sawayanagi | Akiko Omae | 6-0, 4-6, 6-3 | | match details | ||
| 07.05.12 | c 1 | Riko Sawayanagi | Haine Ogata | 6-2, 6-3 | | match details | Fukuoka | Césped |
| 07.05.12 | c 2 | Kazusa Ito | Riko Sawayanagi | 6-1, 6-3 | | match details | ||
| 20.02.12 | calif. | Lesley Pattinama Kerkhove | Riko Sawayanagi | 6-4, 6-2 | | match details | Mildura | Césped |
| 20.02.12 | c 1 | Riko Sawayanagi | Zoe Hives | 6-1, 6-1 | | match details | ||
| 20.02.12 | c 2 | Riko Sawayanagi | Chloe Hule | 6-0, 6-2 | | match details |