Tatsuma Ito defeated Shuichi Sekiguchi 6-3 4-6 6-4 in the Auckland qualifying round 1 on hard. The upset overturned the form book — Shuichi Sekiguchi came in leading the head-to-head 2–0. Tatsuma Ito claimed a first win over Shuichi Sekiguchi in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-04-05 | M25 Kashiwa 1 | R32 | hard | Shuichi Sekiguchi | 4-6 6-3 7-5 |
| 2010-03-29 | Japan F3 | QF | hard | Shuichi Sekiguchi | 1-6 7-6(1) 6-1 |
Averages over each player's completed matches in the selected window (101 vs 94). 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