01/By surface
each with its own count, at equal weight
Hard
1-0
T. leads 1-0 in 1 meeting on hard
Clay
1-0
T. 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, T. first |
|---|---|---|---|---|---|---|
| May 21, 2026 | Hamburg OpenATP500 | clay | quarterfinal | Paul T. | 6-2, 7-5 | 26 v 65 |
| Oct 16, 2023 | Japan Open Tennis ChampionshipsATP500 | hard | 1st round | Paul T. | 3-6, 6-1, 6-3 | 12 v 48 |
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. Paul T. and Altmaier D. each carry the table against every opponent faced.