Jesse Delaney defeated Jake Delaney 4-6 6-1 6-4 in the M15 Harmon 1 quarter-final on hard. The upset overturned the form book — Jake Delaney came in ranked #378, leading the head-to-head 6–1. Jesse Delaney narrowed the head-to-head to 6–2.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2025-10-23 | M25 Brisbane 1 | R16 | hard | Jake Delaney | 6-3 6-4 |
| 2025-07-30 | M15 Nakhon Pathom 3 | R32 | hard | Jake Delaney | 6-1 3-6 6-4 |
| 2025-03-18 | M25 Swan Hill 1 | R32 | grass | Jake Delaney | 6-2 6-4 |
| 2024-11-12 | M25 Brisbane 1 | R32 | hard | Jake Delaney | 7-6(3) 6-3 |
| 2024-09-10 | M25 Darwin 1 | R32 | hard | Jake Delaney | 6-3 6-4 |
| 2024-02-28 | M25 Traralgon 2 | R32 | hard | Jake Delaney | 6-3 6-2 |
| 2023-07-05 | M15 Tianjin 4 | R32 | hard | Jesse Delaney | 6-4 1-2 |
Averages over each player's completed matches in the selected window (9 vs 32). ATP, WTA & Challenger.
Delaney J.: 14 days rest · 1 match (14d). Higher means fresher. About
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About