01/By surface
each with its own count, at equal weight
Hard
Never on hard
no meeting on this surface
Clay
0-1
D. leads 1-0 in 1 meeting on clay
Grass
Never on grass
no meeting on this surface
02/Every meeting
1 row, newest first
| Date | Tournament | Surface | Round | Winner | Score, winner first | Ranks, R. first |
|---|---|---|---|---|---|---|
| May 18, 2026 | Hamburg OpenATP500 | clay | 1st round | Altmaier D. | 7-5, 6-2 | 102 v 65 |
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. Hijikata R. and Altmaier D. each carry the table against every opponent faced.