Gengo Kikuchi defeated Cheng Yu Yu 7-5 7-5 in the Japan F1 round of 32 on hard. The upset overturned the form book — Cheng Yu Yu came in leading the head-to-head 1–0, but Gengo Kikuchi had been the form player, winning 4 of their last 4 on hard. Gengo Kikuchi claimed a first win over Cheng Yu Yu in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2018-05-14 | Vietnam F3 | R16 | hard | Cheng Yu Yu | 6-3 6-1 |
Averages over each player's completed matches in the selected window (18 vs 50). 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