Gengo Kikuchi defeated Keisuke Watanuki 3-6 7-5 7-6 in the Japan F5 round of 32 on clay. The upset overturned the form book — Keisuke Watanuki came in leading the head-to-head 1–0. Gengo Kikuchi claimed a first win over Keisuke Watanuki in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-28 | Japan F4 | Q16 | hard | Keisuke Watanuki | 6-2 5-7 7-6(1) |
Averages over each player's completed matches in the selected window (57 vs 11). 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