Jake Delaney defeated Colin Sinclair 4-6 7-6 7-6 in the M15 Kashiwa 1 round of 32 on hard. The upset overturned the form book — Colin Sinclair came in leading the head-to-head 1–0, but Jake Delaney had been the form player, winning 9 of their last 10 on hard. Jake Delaney claimed a first win over Colin Sinclair in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-10-08 | M25 Cairns 2 | R32 | hard | Colin Sinclair | 6-3 6-7(7) 6-3 |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.