Luke Simkiss defeated Alec Deckers 7-6 4-6 6-4 in the M15 Alkmaar 1 quarter-final on clay. The upset overturned the form book — Alec Deckers came in leading the head-to-head 2–0. Luke Simkiss claimed a first win over Alec Deckers in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-08-02 | M25 Roehampton 1 | QF | hard | Alec Deckers | 6-4 6-4 |
| 2023-10-31 | M25 Sunderland 2 | R32 | hard | Alec Deckers | 4-6 7-6(5) 7-6(6) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.