Country
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Birthdate
Height
Weight
Profi since
Play
Ranking's position
Points
Prize money
Japan
17.06.90, 33 years
17.06.90, 33 years
Yi Chen vs. Yoshiko Koizumi - H2H matches
| 03.10.11 | q 1 | Yi Chen | Yoshiko Koizumi | 6-0, 6-0 | match details |  Kofu | Hard |
Yi Chen form & Yoshiko Koizumi form
Yi Chen - last matches
.png){kind=small} Taipei - Hard | ||||
| 28.10.13 q 2 | vs. Yurina Koshino | 0-6, 0-6 |  | match details |
| 28.10.13 q 1 | vs. Yu-Ting Hsieh | 7-5, 6-1 |  | match details |
| Taipei - Hard | ||||
| 03.06.13 1st round | vs. Yi-Chi Ma | 6-3, 6-1 | | match details |
| 03.06.13 1/4 | vs. Ya-Hsuan Lee | 3-6, 1-6 | | match details |
| 03.06.13 2nd round | vs. Ting-Fei Juan | 6-3, 6-3 | | match details |
 Balikpapan - Hard | ||||
| 13.05.13 qual. | vs. Lin Zhu | 4-6, 3-6 | | match details |
| 13.05.13 q 1 | vs. Natasha Palha | 6-4, 6-4 | | match details |
 Phuket - I. hard | ||||
| 29.04.13 q 1 | vs. Patcharin Cheapchadej | 4-6, 6-0, 6-3 | | match details |
| 29.04.13 qual. | vs. Alison Bai | 2-6, 1-6 | | match details |
| Phuket - I. hard | ||||
| 22.04.13 qual. | vs. Varunya Wongteanchai | 6-2, 6-2 | | match details |
| 22.04.13 1st round | vs. Luksika Kumkhum | 2-6, 1-6 | | match details |
| 22.04.13 q 1 | vs. Pimpitcha Jattavapornvanit | 6-0, 6-0 | | match details |
| Nishi Tama - Hard | ||||
| 25.03.13 q 1 | vs. Hye-Min Lee | 0-6, 1-6 | | match details |
 Antalya - Clay | ||||
| 25.02.13 q 1 | vs. Maria Marfutina | 6-72, 4-6 | | match details |
| Antalya - Clay | ||||
| 18.02.13 q 2 | vs. Alessia Piran | 1-6, 1-6 | | match details |
| Antalya - Clay | ||||
| 11.02.13 q 2 | vs. Si Qi Liu | 6-0, 6-2 | | match details |
| 11.02.13 1st round | vs. Sofia Kvatsabaia | 3-6, 1-6 | | match details |
| 11.02.13 qual. | vs. Gabriela Van De Graaf | 6-1, 6-3 | | match details |
 Hong Kong - Hard | ||||
| 07.01.13 1st round | vs. Ho Ching Wu | 3-6, 6-3, 6-4 | | match details |
| 07.01.13 2nd round | vs. Ting-Fei Juan | 3-6, 2-6 | | match details |
| 07.01.13 q 1 | vs. Man Ying Maggie Ng | 6-1, 6-1 | | match details |
| 07.01.13 qual. | vs. Tatyana Grigoryan | 6-2, 6-1 | | match details |
| Hong Kong - Hard | ||||
| 31.12.12 qual. | vs. Yukun Zhang | 6-1, 6-4 | | match details |
| 31.12.12 1st round | vs. Ai Wen Zhu | 4-6, 1-6 | | match details |
| 31.12.12 q 1 | vs. Fang Ying Xun | 6-3, 5-7, 6-4 | | match details |
| Bangkok - Hard | ||||
| 10.12.12 q 1 | vs. Syna Kayser | 1-6, 3-6 | | match details |
| Taipei - Hard | ||||
| 22.10.12 1st round | vs. Zi Yang | 5-7, 6-2, 5-7 | | match details |
 Incheon - Hard | ||||
| 25.06.12 q 1 | vs. Tsz Yan Chau | 6-0, 6-0 | | match details |
| 25.06.12 q 2 | vs. Chang Liu | 3-6, 1-6 | | match details |
| Goyang - Hard | ||||
| 18.06.12 q 1 | vs. Jin-A Lee | 3-6, 1-6 | | match details |
Yoshiko Koizumi - last matches
| Kofu - Hard | ||||
| 19.03.12 q 2 | vs. Ting-Fei Juan | 2-6, 0-6 | | match details |
| 19.03.12 q 1 | vs. Yumiko Ushiyama | 3-6, 6-1, 6-2 | | match details |
| Kofu - Hard | ||||
| 03.10.11 q 1 | vs. Yi Chen | 0-6, 0-6 | | match details |
| Mie - Carpet | ||||
| 30.05.11 q 1 | vs. Yoko Nagai | 6-3, 2-6, 6-3 | | match details |
| 30.05.11 1st round | vs. Haine Ogata | 3-6, 0-6 | | match details |
| 30.05.11 qual. | vs. Chisato Nakagawa | 6-3, 7-5 | | match details |
| Miyazaki - Carpet | ||||
| 14.03.11 1st round | vs. Aki Yamasoto | 1-6, 2-6 | | match details |
