Masaki Sasai defeated Shuichi Sekiguchi 7-6 7-5 in the Japan F6 round of 32 on hard. The upset overturned the form book — Shuichi Sekiguchi came in leading the head-to-head 2–0. Masaki Sasai claimed a first win over Shuichi Sekiguchi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2016-03-07 | Japan F1 | R32 | hard | Shuichi Sekiguchi | 6-3 6-0 |
| 2013-03-18 | Japan F2 | R32 | hard | Shuichi Sekiguchi | 6-3 6-2 |
Averages over each player's completed matches in the selected window (12 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