Gengo Kikuchi defeated Issei Okamura 6-4 6-2 in the Japan F7 round of 32 on carpet. The upset overturned the form book — Issei Okamura came in leading the head-to-head 1–0. Gengo Kikuchi claimed a first win over Issei Okamura in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-04-01 | Japan F4 | QF | hard | Issei Okamura | 6-4 6-2 |
Averages over each player's completed matches in the selected window (57 vs 200). 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