Head to head
1
Hard
0
0
Grass
1
Daniel Altmaier's wins on the left · Gabriel Diallo's on the right · bar lengths share one scale
All meetings (2)
| 2025 | Wimbledon | Grass | R128 | Gabriel Diallo | 6-1 6-2 6-4 |
| 2024 | Davis Cup Finals QF: GER vs CAN | Hard | RR | Daniel Altmaier | 7-6(5) 6-4 |
Methodology
Head-to-head totals and surface splits exclude walkovers (no match was played), which follows ATP convention — walkover meetings still appear in the match list. The momentum chart plots the running lead across all counted meetings, oldest to newest.