Mischa Zverev defeated Tommy Haas 6-4 6-4 in the Stuttgart quarter-final on grass. The upset overturned the form book — Tommy Haas came in leading the head-to-head 1–0. Mischa Zverev claimed a first win over Tommy Haas in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2009-06-08 | Halle | QF | grass | Tommy Haas | 7-6(5) 6-2 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (189 vs 19). ATP, WTA & Challenger.