F. Tiafoe leads the head-to-head 5-0 since 2018 against D. Altmaier, over 5 matches.
| Surface | D. Altmaier | F. Tiafoe |
|---|---|---|
| Grass | 0 | 2 |
| Clay | 0 | 2 |
| Hard | 0 | 1 |
| Date | Winner | Score | Event |
|---|---|---|---|
| June 20, 2026 | F. Tiafoe | 2 - 0 | Halle · Semi-finals · grass |
| June 9, 2026 | F. Tiafoe | 2 - 1 | Stuttgart · 1/16-finals · grass |
| June 1, 2025 | F. Tiafoe | 3 - 0 | French Open · 1/8-finals · clay |
| May 14, 2023 | F. Tiafoe | 2 - 1 | ATP Rome · 1/32-finals · clay |
| Jan. 16, 2023 | F. Tiafoe | 3 - 1 | Australian Open · 1/64-finals · hard |