Republic of Korea
15.03.03, 16 years
15.03.03, 16 years
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
24.01.02, 17 years
24.01.02, 17 years
Yeon Woo Ku vs. Dayeon Back - head to head matches
| 12.06.17 | q 1 | Yeon Woo Ku | Dayeon Back | 6-1, 6-2 | match details |  Gimcheon | Hard |
Yeon Woo Ku - last matches
 Australian Open - Hard | ||||
| 20.01.19 1st round | vs. Priska Madelyn Nugroho | 3-6, 7-67, 4-6 |  | match details |
| Goyang - Hard | ||||
| 07.05.18 q 1 | vs. Do Hee Bae | 7-62, 6-3 |  | match details |
| 07.05.18 q 2 | vs. Dabin Kim | 6-71, 4-6 | | match details |
| Gimcheon - Hard | ||||
| 14.06.17 1st round | vs. Ju-Eun Kim | 4-6, 4-6 | | match details |
| 12.06.17 q 1 | vs. Dayeon Back | 6-1, 6-2 | | match details |
| 12.06.17 q 2 | vs. Yexin Ma | 6-3, 6-2 | | match details |
| 12.06.17 qual. | vs. Sinhee Kim | 6-1, Sinhee Kim - retired | | match details |
| Incheon - Hard | ||||
| 15.05.17 q 1 | vs. Yu Jin Ahn | 6-78, 6-2, 3-6 | | match details |
| Changwon - Hard | ||||
| 08.05.17 q 2 | vs. Sohyun Park | 4-6, 4-6 | | match details |
| 08.05.17 q 1 | vs. Jun Sein | 6-1, 6-1 | | match details |
Dayeon Back - last matches
| Yeongwol - Hard | ||||
| 07.09.18 1/4 | vs. So-Ra Lee | 3-6, 3-6 | | match details |
| 06.09.18 2nd round | vs. Hyojung Yea | 6-0, 4-2, Hyojung Yea - retired | | match details |
| 04.09.18 1st round | vs. Angelina Gabueva | 6-2, 7-69 | | match details |
| Sangju - I. hard | ||||
| 06.06.18 1st round | vs. Ya-Hsuan Lee | 1-6, 0-6 | | match details |
| 05.06.18 qual. | vs. Dabin Oh | 6-0, 6-2 | | match details |
| 04.06.18 q 2 | vs. Hsin-Yuan Shih | 6-1, 6-0 | | match details |
| 03.06.18 q 1 | vs. Hwui Won Wi | 7-5, 6-3 | | match details |
| Goyang - Hard | ||||
| 07.05.18 q 2 | vs. Ching-Wen Hsu | 4-6, 1-6 | | match details |
| 06.05.18 q 1 | vs. So-Hee Yoon | 6-0, 6-0 | | match details |
| Yeongwol - Hard | ||||
| 28.08.17 q 2 | vs. Do Hee Bae | 2-6, 3-6 | | match details |
| 28.08.17 q 1 | vs. Ji Yun Yun | 6-2, 6-2 | | match details |
| Gimcheon - Hard | ||||
| 12.06.17 q 1 | vs. Yeon Woo Ku | 1-6, 2-6 | | match details |
| Gimcheon - Hard | ||||
| 07.06.17 1st round | vs. Joanna Carswell | 6-4, 6-76, 5-7 | | match details |
| 05.06.17 q 2 | vs. Hyojung Yea | 6-1, 6-2 | | match details |
| 05.06.17 qual. | vs. Sung Hee Kim | 6-2, 6-3 | | match details |
| 05.06.17 q 1 | vs. En Su Youn | 6-1, 6-1 | | match details |
