Gilles Muller defeated Gilles Simon 6-3 6-4 in the Tokyo quarter-final on hard. The upset overturned the form book — Gilles Simon came in leading the head-to-head 2–0, defending last year's semi-final. Gilles Muller claimed a first win over Gilles Simon in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-09-21 | Metz | QF | hard | Gilles Simon | 6-4 6-4 |
| 2014-09-29 | Tokyo | R16 | hard | Gilles Simon | 4-6 7-6(1) 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 (197 vs 200). ATP, WTA & Challenger.