Philipp Kohlschreiber defeated Diego Schwartzman 7-5 7-6 in the Vienna quarter-final on hard. The upset overturned the form book — Diego Schwartzman came in leading the head-to-head 1–0. Philipp Kohlschreiber claimed a first win over Diego Schwartzman in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2021-05-31 | Roland Garros | R32 | clay | Diego Schwartzman | 6-4 6-2 6-1 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.