Yannick Mertens defeated Daniel Masur 4-6 7-6 6-3 in the Germany F5 round of 16 on clay. The result followed the form book — Yannick Mertens came in leading the head-to-head 1–0. Yannick Mertens extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-09-25 | Portugal F20 | QF | hard | Yannick Mertens | 6-2 7-6(2) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.