Dominik Koepfer defeated Rhyne Williams 3-6 7-6 6-2 in the USA F31 round of 32 on hard. The upset overturned the form book — Rhyne Williams came in leading the head-to-head 2–1. Dominik Koepfer narrowed the head-to-head to 2–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2017-02-27 | USA F9 | R16 | clay | Dominik Koepfer | 2-6 6-0 6-1 |
| 2016-08-08 | USA F27 | QF | hard | Rhyne Williams | 6-2 6-4 |
| 2016-06-13 | USA F18 | R32 | hard | Rhyne Williams | 6-3 6-1 |
Averages over each player's completed matches in the selected window (200 vs 34). 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