01/By surface
each with its own count, at equal weight
Hard
0-1
K. leads 1-0 in 1 meeting on hard
Clay
0-1
K. leads 1-0 in 1 meeting on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, J. first |
|---|---|---|---|---|---|---|
| Aug 31, 2019 | US OpenGrand Slam | hard | 3rd round | Ahn K. | 6-3, 7-5 | 77 v 141 |
| Apr 10, 2019 | Copa Claro ColsanitasInternational | clay | 1st round | Ahn K. | 2-6, 7-6, 7-5 | 29 v 205 |
A record, never a share of meetings. Main-draw singles since 2013; a meeting ended by retirement is counted with the sets that were played and marked; a walkover is listed and counted in neither column. Ostapenko J. and Ahn K. each carry the table against every opponent faced.