Keisuke Watanuki defeated Masato Shiga 6-4 6-2 in the Japan F8 round of 32 on clay. Keisuke Watanuki extended the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-21 | Japan F3 | Q16 | hard | Keisuke Watanuki | 6-4 2-6 6-3 |
| 2014-03-17 | Japan F2 | R32 | hard | Masato Shiga | 7-6(0) 6-4 |
Averages over each player's completed matches in the selected window (11 vs 59). 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