Gengo Kikuchi defeated Hiromasa Oku 6-4 6-3 in the Guam F1 round of 32 on hard. The result followed the form book — Gengo Kikuchi came in leading the head-to-head 2–1. Gengo Kikuchi extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-21 | Japan F3 | Q16 | hard | Gengo Kikuchi | 6-2 6-1 |
| 2014-07-14 | Hong Kong F2 | R32 | hard | Gengo Kikuchi | 6-7(3) 6-4 6-2 |
| 2014-06-09 | Japan F6 | R32 | hard | Hiromasa Oku | 6-3 7-6(6) |
Averages over each player's completed matches in the selected window (57 vs 19). 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