Gengo Kikuchi advanced when Yusuke Watanuki retired 2-6 6-4 1-0 in the Japan F1 round of 16. Gengo Kikuchi extended the head-to-head to 3–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-06-13 | Japan F8 | F | carpet | Gengo Kikuchi | 4-6 7-6(8) 6-0 |
| 2014-06-02 | Japan F5 | R16 | clay | Gengo Kikuchi | 2-6 6-4 6-4 |
| 2009-06-08 | Japan F4 | R32 | clay | Yusuke Watanuki | 6-3 6-7(3) 6-1 |
Averages over each player's completed matches in the selected window (56 vs 41). 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