Oscar Otte advanced when Daniel Altmaier retired 5-4 in the Aix En Provence CH semi-final. Oscar Otte extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-04-24 | Madrid Masters | R64 | clay | Daniel Altmaier | 6-4 7-5 |
| 2022-06-06 | Stuttgart | R32 | grass | Oscar Otte | 7-6(2) 7-6(4) |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.