Gilles Simon defeated Donald Young 6-4 6-3 in the Acapulco round of 16 on hard. The result followed the form book — Gilles Simon came in leading the head-to-head 2–1. Gilles Simon extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-09-01 | US Open | R128 | hard | Donald Young | 2-6 4-6 6-4 6-4 6-4 |
| 2010-09-01 | US Open | R128 | hard | Gilles Simon | 6-1 6-4 6-2 |
| 2008-06-17 | Nottingham | R32 | grass | Gilles Simon | 6-1 6-4 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.