Martin Landaluce defeated Kacper Zuk 6-3 6-3 in the M25 Sabadell 1 round of 16 on clay. The upset overturned the form book — Kacper Zuk came in leading the head-to-head 1–0. Martin Landaluce claimed a first win over Kacper Zuk in two meetings, narrowing the head-to-head to 1–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-09-20 | M25 Setubal 1 | R32 | hard | Kacper Zuk | 6-2 7-6(5) |
Averages over each player's completed matches in the selected window. ATP, WTA & Challenger.