Tommy Haas defeated Gilles Muller 6-3 6-2 in the Delray Beach quarter-final on hard. The upset overturned the form book — Gilles Muller came in leading the head-to-head 3–0. Tommy Haas claimed a first win over Gilles Muller in four meetings, narrowing the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-05-08 | Madrid Masters | R64 | clay | Gilles Muller | 6-4 7-6(7) |
| 2011-06-20 | Wimbledon | R128 | grass | Gilles Muller | 7-6(5) 7-6(3) 3-6 6-3 |
| 2008-08-25 | US Open | R64 | hard | Gilles Muller | 2-6 2-6 7-6(5) 6-3 6-3 |
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 (200 vs 200). ATP, WTA & Challenger.