John Isner defeated Daniel Altmaier 6-3 7-6(1) in the 2023 Dallas Open second round on hard courts.
Match Statistics
| Stat | John Isner | Daniel Altmaier |
| Aces | 18 | 9 |
| Double faults | 0 | 3 |
| First serve % | 80 | 62 |
| First serve points won % | 91 | 80 |
| Second serve points won % | 73 | 62 |
| Break points saved % | — | 67 |
| Break points converted % | 33 | — |
| Service points won % | 87 | 73 |
| Return points won % | 27 | 13 |
| Total points won % | 57 | 43 |
Player Comparison
| Field | John Isner | Daniel Altmaier |
| Country |
USA
|
GER
|
| Birth date | Apr 26, 1985 | Sep 12, 1998 |
| Age | 37 | 24 |
| Height | 208 cm | 188 cm |
| Handedness | Right-Handed | Right-Handed |
| Backhand style | Two-Handed Backhand | One-Handed Backhand |
| Ranking (entering) | 39 | 99 |
| Ranking points (entering) | 980 | 539 |
| Elo (entering) | 1,868 | 1,564 |
| Current career W-L | 470–294 | 80–132 |
| Current career earnings | $22,433,361 | $5,860,370 |
Path
John Isner's path
John Isner's next match