Johannes Haerteis defeated Patrik Niklas Salminen 7-6 5-7 7-5 in the Drummondville CH round of 16 on hard. The upset overturned the form book — Patrik Niklas Salminen came in leading the head-to-head 1–0. Johannes Haerteis claimed a first win over Patrik Niklas Salminen in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-04-23 | Israel F4 | R32 | hard | Patrik Niklas Salminen | 6-4 6-7(3) 6-4 |
Averages over each player's completed matches in the selected window (145 vs 84). 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