Dominik Koepfer defeated John Mcnally 6-4 4-6 6-4 in the Columbus CH round of 16 on hard. The upset overturned the form book — John Mcnally came in leading the head-to-head 1–0, defending last year's round of 32. Dominik Koepfer claimed a first win over John Mcnally in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-07-25 | USA F25 | Q32 | hard | John Mcnally | 6-4 1-6 6-4 |
Averages over each player's completed matches in the selected window (200 vs 75). 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