01/By surface
each with its own count, at equal weight
Hard
1-1
Level 1-1 in 2 meetings on hard
Clay
1-0
D. leads 1-0 in 1 meeting on clay
Grass
1-0
D. leads 1-0 in 1 meeting on grass
02/Every meeting
4 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, D. first |
|---|---|---|---|---|---|---|
| Jan 19, 2022 | Australian OpenGrand Slam, best of 5 | hard | 2nd round | Opelka R. | 6-4, 6-3, 7-6 | 53 v 29 |
| Jun 28, 2021 | WimbledonGrand Slam, best of 5 | grass | 1st round | Koepfer D. | 6-4, 7-6, 6-2 | 62 v 32 |
| May 3, 2021 | Mutua Madrid OpenMasters 1000 | clay | 1st round | Koepfer D. | 6-4, 6-4 | 53 v 46 |
| Aug 29, 2019 | US OpenGrand Slam, best of 5 | hard | 2nd round | Koepfer D. | 6-4, 6-4, 7-6 | 118 v 42 |
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 Opelka R. each carry the table against every opponent faced.