Shota Tagawa defeated Shuichi Sekiguchi 7-6 4-6 7-6 in the Japan F1 round of 32 on hard. The upset overturned the form book — Shuichi Sekiguchi came in leading the head-to-head 1–0. Shota Tagawa claimed a first win over Shuichi Sekiguchi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2013-03-11 | Japan F1 | R32 | hard | Shuichi Sekiguchi | 6-1 6-1 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.