
Jan Choinski defeated Yannick Mertens 4-6 6-4 6-1 in the USA F12 round of 32 on hard. The upset overturned the form book — Yannick Mertens came in leading the head-to-head 2–0. Jan Choinski claimed a first win over Yannick Mertens in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-02-29 | France F4 | R16 | hard | Yannick Mertens | 6-4 6-1 |
| 2015-03-02 | France F4 | R32 | hard | Yannick Mertens | 6-2 6-1 |
Averages over each player's completed matches in the selected window (200 vs 184). ATP, WTA & Challenger.
Choinski J.: 3 days rest · 1 match, 19 games (7d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Per-surface Serve / Return Rating (0–100, percentile within the hard field, opponent-adjusted over 52 weeks). About