Hsin Han Lee defeated Shuichi Sekiguchi 6-3 6-4 in the Japan F6 round of 32 on carpet. The upset overturned the form book — Shuichi Sekiguchi came in leading the head-to-head 1–0. Hsin Han Lee claimed a first win over Shuichi Sekiguchi in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2012-02-20 | India F1 | R16 | hard | Shuichi Sekiguchi | 4-6 6-3 7-6(3) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.