Yamato Sueoka defeated Jake Delaney 7-5 3-6 6-4 in the M25 Tainan 2 round of 16 on clay. The upset overturned the form book — Jake Delaney came in leading the head-to-head 1–0. Yamato Sueoka claimed a first win over Jake Delaney in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-09-14 | M25 Darwin 1 | R16 | hard | Jake Delaney | 4-6 6-2 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.