Yuichi Sugita defeated Jack Sock 7-5 6-4 in the Cincinnati Masters round of 64 on hard. The result followed the form book — Yuichi Sugita came in leading the head-to-head 1–0, defending last year's round of 16. Yuichi Sugita extended the head-to-head to 2–0.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-01-15 | Australian Open | R128 | hard | Yuichi Sugita | 6-1 7-6(4) 5-7 6-3 |
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About
Averages over each player's completed matches in the selected window (199 vs 199). ATP, WTA & Challenger.