Tatsuma Ito defeated Naoki Tajima 6-3 6-1 in the M25 Sapporo 2 round of 32 on hard. The upset overturned the form book — Naoki Tajima came in leading the head-to-head 1–0, but Tatsuma Ito had been the form player, winning 3 of their last 7 on hard. Tatsuma Ito claimed a first win over Naoki Tajima in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-06-14 | M25 Changwon 1 | R32 | hard | Naoki Tajima | 3-6 6-6 |
Averages over each player's completed matches in the selected window (18 vs 12). 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