Gilles Simon defeated Gilles Muller 6-4 6-4 in the Metz quarter-final on hard. The upset overturned the form book — Gilles Muller came in defending last year's round of 16, but Gilles Simon had been the form player, winning 2 of their last 4 on hard. Gilles Simon extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-10-05 | Tokyo | QF | hard | Gilles Muller | 6-3 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 (200 vs 197). ATP, WTA & Challenger.