Tristan Lamasine defeated Peter Polansky 4-6 6-2 7-5 in the Istanbul CH round of 32 on hard. The upset overturned the form book — Peter Polansky came in leading the head-to-head 1–0. Tristan Lamasine claimed a first win over Peter Polansky in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-01-16 | Australian Open | Q1 | hard | Peter Polansky | 6-2 6-4 |
Averages from each player's recent completed matches (20 vs 20). ATP, WTA & Challenger.