
Daniel Masur defeated Yannick Mertens 7-6 6-3 in the Koblenz CH round of 32 on hard. The upset overturned the form book — Yannick Mertens came in leading the head-to-head 1–0. Daniel Masur claimed a first win over Yannick Mertens in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-06-10 | Germany F5 | R16 | clay | Yannick Mertens | 4-6 7-6(6) 6-3 |
Averages over each player's completed matches in the selected window (200 vs 183). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About