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
Republic of Korea
02.07.92, 32 years
02.07.92, 32 years
Ayumi Koshiishi vs. Jin Yoo - H2H matches
| 07.05.18 | q 2 | Ayumi Koshiishi | Jin Yoo | 6-3, 6-3 | match details |  Goyang | Hard |
Ayumi Koshiishi form & Jin Yoo form
Ayumi Koshiishi - last matches
| W35 Andong - Hard | ||||
| 22.05.25 2nd round | vs. Dayeon Back | 0-6, 3-6 |  | match details |
| 21.05.25 1st round | vs. Eunhye Lee | 6-3, 6-1 |  | match details |
| 19.05.25 q 2 | vs. Nanari Katsumi | 6-1, 6-4 | | match details |
| 19.05.25 qual. | vs. Hiroko Kuwata | 7-62, 6-1 | | match details |
| W35 Changwon - Hard | ||||
| 16.05.25 2nd round | vs. Ena Koike | 6-3, 6-3 | | match details |
| 16.05.25 1/4 | vs. Wushuang Zheng | 4-6, 3-6 | | match details |
| 14.05.25 1st round | vs. Hikaru Sato | 6-2, 6-2 | | match details |
| W35 Goyang - Hard | ||||
| 08.05.25 2nd round | vs. Zongyu Li | 4-6, 2-6 | | match details |
| 07.05.25 1st round | vs. Yeri Hong | 4-6, 7-5, 6-1 | | match details |
| W35 Goyang - Hard | ||||
| 02.05.25 1/4 | vs. Rina Saigo | 4-6, 1-6 | | match details |
| 02.05.25 2nd round | vs. Anastasia Zolotareva | 6-75, 6-4, 6-3 | | match details |
| 30.04.25 1st round | vs. Eunhye Lee | 6-2, 6-2 | | match details |
 W100 Tokyo - Hard | ||||
| 23.04.25 1st round | vs. Wakana Sonobe | 4-6, 1-6 | | match details |
| 22.04.25 qual. | vs. Eri Shimizu | 3-6, 3-6 | | match details |
| 21.04.25 q 1 | vs. Su Jeong Jang | 2-6, 6-1, 6-1 | | match details |
| W35 Osaka - Hard | ||||
| 09.04.25 1st round | vs. Yexin Ma | 6-3, 4-6, 1-6 | | match details |
| 07.04.25 q 2 | vs. Yui Chikaraishi | 6-4, 6-2 | | match details |
| 07.04.25 qual. | vs. Natsuki Yoshimoto | 6-1, 6-4 | | match details |
| W50 Kofu - Hard | ||||
| 18.03.25 1st round | vs. Kyoka Okamura | 3-6, 3-6 | | match details |
| W50 Kyoto - I. hard | ||||
| 12.03.25 1st round | vs. Akiko Omae | 2-6, 7-63, 1-6 | | match details |
 W35 Launceston - Hard | ||||
| 28.02.25 1/4 | vs. Sakura Hosogi | 6-75, 3-6 | | match details |
| 27.02.25 2nd round | vs. Miho Kuramochi | 6-2, 1-6, 7-66 | | match details |
| 25.02.25 1st round | vs. Alana Parnaby | 7-5, 6-2 | | match details |
| W35 Burnie - Hard | ||||
| 21.02.25 1/4 | vs. Jaimee Fourlis | 4-6, 1-6 | | match details |
| 20.02.25 2nd round | vs. Alicia Dale | 7-5, 6-4 | | match details |
| 18.02.25 1st round | vs. Elena Micic | 5-7, 6-3, 6-1 | | match details |
 W35 Timaru - Hard | ||||
| 13.02.25 2nd round | vs. Miho Kuramochi | 5-7, 3-6 | | match details |
| 12.02.25 1st round | vs. Monique Barry | 6-2, 6-2 | | match details |
| W75 Brisbane - Hard | ||||
| 03.02.25 qual. | vs. Mingge Xu | 1-6, 3-6 | | match details |
| 02.02.25 q 1 | vs. Alicia Smith | 5-2, Alicia Smith - retired | | match details |
Jin Yoo - last matches
| Yeongwol - Hard | ||||
| 06.09.18 2nd round | vs. Dabin Kim | 3-6, 1-6 | | match details |
| 05.09.18 1st round | vs. Dami Lee | 2-6, 6-2, 6-3 | | match details |
| Yeongwol - Hard | ||||
| 27.08.18 q 2 | vs. Hyeran Yun | 5-7, 1-6 | | match details |
| 26.08.18 q 1 | vs. Hae Ri Lee | 6-0, 6-0 | | match details |
| Gimcheon - Hard | ||||
| 19.08.18 q 1 | vs. Da Ye Kim | 4-6, 2-6 | | match details |
| Gimcheon - Hard | ||||
| 13.08.18 qual. | vs. Sakura Hosogi | 6-2, 6-73, 4-6 | | match details |
| 12.08.18 q 2 | vs. Han-Bit Lee | 6-0, 6-1 | | match details |
| Changwon - Hard | ||||
| 20.05.18 q 1 | vs. Eunhye Lee | 0-6, 1-2, - Jin Yoo - retired | | match details |
| Incheon - Hard | ||||
| 14.05.18 q 2 | vs. Alina Silich | 2-6, 1-6 | | match details |
| 13.05.18 q 1 | vs. Sung Hee Kim | 6-1, 7-5 | | match details |
| Goyang - Hard | ||||
| 07.05.18 q 1 | vs. Seunghyun Lee | 6-2, 6-2 | | match details |
| 07.05.18 q 2 | vs. Ayumi Koshiishi | 3-6, 3-6 | | match details |
| Yeongwol - Hard | ||||
| 04.09.17 q 1 | vs. Kumi So | 1-6, 6-2, 1-6 | | match details |
| Yeongwol - Hard | ||||
| 31.08.17 2nd round | vs. Do Hee Bae | 3-6, 6-4, 4-6 | | match details |
| 30.08.17 1st round | vs. Linnea Malmqvist | 6-4, 6-3 | | match details |
| Incheon - Hard | ||||
| 15.05.17 q 1 | vs. Alexandra Morozova | 6-3, 7-5 | | match details |
| 15.05.17 q 2 | vs. Sumin Kim | 1-6, 1-4, - Jin Yoo - retired | | match details |
| Changwon - Hard | ||||
| 08.05.17 q 1 | vs. Chae Hyun Sim | 4-6, 4-6 | | match details |
| Yeongwol - Hard | ||||
| 29.08.16 q 2 | vs. Ah Song | 4-6, 1-6 | | match details |
| Gimcheon - Hard | ||||
| 13.07.16 2nd round | vs. Mana Ayukawa | 1-6, 1-6 | | match details |
| 12.07.16 1st round | vs. Mami Hasegawa | 6-2, 6-3 | | match details |
| Gimcheon - Hard | ||||
| 04.07.16 q 1 | vs. Yeong Won Jeong | 1-6, 6-0, 4-6 | | match details |
| Gimcheon - Hard | ||||
| 28.06.16 1st round | vs. Chihiro Nunome | 1-6, 7-64, 3-6 | | match details |
| 27.06.16 q 2 | vs. Subin Park | 6-4, 6-2 | | match details |
| 27.06.16 qual. | vs. Ha-Young Ji | 2-6, 6-2, 5-2, Ha-Young Ji - retired | | match details |
| 27.06.16 q 1 | vs. Michaela Haet | 3-6, 6-1, 6-4 | | match details |
| Sangju - Hard | ||||
| 20.06.16 q 2 | vs. Hyojung Yea | 2-6, 0-6 | | match details |
| Incheon - Hard | ||||
| 23.05.16 q 1 | vs. Mami Hasegawa | 6-0, 6-1 | | match details |
| 23.05.16 q 2 | vs. Ju-Eun Kim | 6-2, 1-6, 4-6 | | match details |
| Goyang - Hard | ||||
| 16.05.16 q 1 | vs. Eunji Lim | 6-3, 6-0 | | match details |
