01/By surface
each with its own count, at equal weight
Hard
0-1
K. leads 1-0 in 1 meeting on hard
Clay
Never on clay
no meeting on this surface
Grass
1-0
O. leads 1-0 in 1 meeting on grass
02/Every meeting
2 rows, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, O. first |
|---|---|---|---|---|---|---|
| Mar 11, 2023 | BNP Paribas OpenMasters 1000 | hard | 2nd round | Khachanov K. | 6-3, 6-3 | 82 v 15 |
| Jun 17, 2022 | Halle OpenATP500 | grass | quarterfinal | Otte O. | 4-6, 7-6, 6-4 | 51 v 23 |
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. Otte O. and Khachanov K. each carry the table against every opponent faced.