Joao Domingues defeated Yannick Mertens 6-4 6-2 in the Tenerife 3 CH qualifying round 1 on hard. The upset overturned the form book — Yannick Mertens came in leading the head-to-head 1–0, but Joao Domingues had been the form player, winning 3 of their last 6 on hard. Joao Domingues claimed a first win over Yannick Mertens in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2015-03-09 | Portugal F3 | R32 | hard | Yannick Mertens | 3-6 6-3 6-0 |
Averages over each player's completed matches in the selected window (110 vs 3). 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