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
30.10.98, 26 years
30.10.98, 26 years
Yeon Woo Ku vs. Jun Sein - head to head matches
| 08.05.17 | q 1 | Yeon Woo Ku | Jun Sein | 6-1, 6-1 | match details |  Changwon | Hard |
Yeon Woo Ku form & Jun Sein form
Yeon Woo Ku - last matches
| W35 Andong - Hard | ||||
| 22.05.25 2nd round | vs. Ya-Hsuan Lee | 6-77, 5-7 |  | match details |
| 21.05.25 1st round | vs. Wushuang Zheng | 6-2, 6-3 |  | match details |
| 19.05.25 qual. | vs. Rutuja Bhosale | 6-1, 6-2 | | match details |
| 19.05.25 q 2 | vs. Eunji Lee | 6-1, 6-3 | | match details |
| W35 Changwon - Hard | ||||
| 16.05.25 1/4 | vs. Ekaterina Reyngold | 3-6, 6-73 | | match details |
| 15.05.25 2nd round | vs. Jia-Jing Lu | 6-4, 6-4 | | match details |
| 14.05.25 1st round | vs. Rina Saigo | 6-1, 6-0 | | match details |
| 12.05.25 q 2 | vs. Gyeong Seo Lee | 6-4, 6-1 | | match details |
| 12.05.25 qual. | vs. Arina Varaksina | 6-2, 6-0 | | match details |
 W35 Osaka - Hard | ||||
| 11.04.25 1/4 | vs. Janice Tjen | 1-6, 2-6 | | match details |
| 10.04.25 2nd round | vs. Himeno Sakatsume | 7-63, 6-2 | | match details |
| 09.04.25 1st round | vs. Kanon Yamaguchi | 6-4, 6-3 | | match details |
| W15 Kashiwa - Hard | ||||
| 06.04.25 fin | vs. Ayano Shimizu | 3-6, 3-6 | | match details |
| 05.04.25 1/4 | vs. Daria Egorova | 3-6, 6-4, 4-2, Daria Egorova - retired | | match details |
| 05.04.25 1/2 | vs. Eri Shimizu | 6-2, 6-4 | | match details |
| 04.04.25 2nd round | vs. Rina Saigo | 6-1, 6-1 | | match details |
| 01.04.25 1st round | vs. Nagomi Higashitani | 6-2, 6-2 | | match details |
 W35 Swan - Grass | ||||
| 21.03.25 1/4 | vs. Elena Micic | 7-5, 5-7, 2-6 | | match details |
| 20.03.25 2nd round | vs. Stefani Webb | 6-4, 6-4 | | match details |
| 18.03.25 1st round | vs. Kisa Yoshioka | 6-2, 6-3 | | match details |
| W35 Mildura - Grass | ||||
| 11.03.25 1st round | vs. Laquisa Khan | 4-6, 5-7 | | match details |
| W35 Launceston - Hard | ||||
| 01.03.25 1/2 | vs. Lizette Cabrera | 6-1, 2-6, 4-6 | | match details |
| 28.02.25 1/4 | vs. Gabriella Da Silva Fick | 6-2, 6-2 | | match details |
| 27.02.25 2nd round | vs. Kyoka Okamura | 6-0, 6-4 | | match details |
| 26.02.25 1st round | vs. Ya-Yi Yang | 6-4, 6-2 | | match details |
| W35 Burnie - Hard | ||||
| 18.02.25 1st round | vs. Chengyiyi Yuan | 4-6, 4-6 | | match details |
 W35 Timaru - Hard | ||||
| 12.02.25 1st round | vs. Malene Helgo | 7-64, 5-7, 4-6 | | match details |
 W35 Lousada - I. hard | ||||
| 28.11.24 2nd round | vs. Eva Guerrero Alvarez | 2-6, 7-66, 0-6 | | match details |
| 27.11.24 1st round | vs. Veronika Podrez | 6-4, 6-1 | | match details |
 Billie Jean - I. hard | ||||
| 17.11.24 | vs. Yulia Putintseva | 4-6, 5-7 | | match details |
Jun Sein - last matches
| Sangju - Hard | ||||
| 29.05.17 q 2 | vs. Su Yeon Chun | 2-6, 2-6 | | match details |
| Changwon - Hard | ||||
| 08.05.17 q 1 | vs. Yeon Woo Ku | 1-6, 1-6 | | match details |
| Yeongwol - Hard | ||||
| 05.09.16 q 1 | vs. Ji-Hyun Lee | 4-6, 7-66, 1-6 | | match details |
| Incheon - Hard | ||||
| 23.05.16 q 1 | vs. Maddison Inglis | 0-6, 2-6 | | match details |
| Yeongwol - Hard | ||||
| 31.08.15 q 2 | vs. Se-Hyun Kim | 0-6, 1-6 | | match details |
| Gimcheon - Hard | ||||
| 24.08.15 q 1 | vs. Ah Song | 1-6, 0-6 | | match details |
| Gimcheon - Hard | ||||
| 10.08.15 q 2 | vs. Hyojung Yea | 2-6, 4-6 | | match details |
| Goyang - Hard | ||||
| 08.06.15 q 1 | vs. So Hee Jung | 4-6, 0-6 | | match details |
| Yeongwol - Hard | ||||
| 25.08.14 q 1 | vs. Eun Se Jang | 4-6, 3-6 | | match details |
