01/By surface
each with its own count, at equal weight
Hard
1-0
D. leads 1-0 in 1 meeting on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
D. leads 1-0 in 1 meeting on grass
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, D. first |
|---|---|---|---|---|---|---|
| Aug 1, 2022 | Citi OpenATP500 | hard | 1st round | Koepfer D. | 3-6, 6-3, 6-4 | 145 v 77 |
| Jun 30, 2021 | WimbledonGrand Slam, best of 5 | grass | 2nd round | Koepfer D. | 6-3, 6-7, 7-6, 5-7, 6-3 | 62 v 71 |
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. Koepfer D. and Kwon S.W. each carry the table against every opponent faced.