Ryan Nijboer defeated Alvaro Lopez San Martin 6-3 7-5 in the M15 Madrid 1 semi-final on clay. The upset overturned the form book — Alvaro Lopez San Martin came in leading the head-to-head 2–0. Ryan Nijboer claimed a first win over Alvaro Lopez San Martin in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2023-09-29 | M25 Sabadell 2 | QF | clay | Alvaro Lopez San Martin | 6-4 6-4 |
| 2022-09-28 | M15 Sabadell 1 | R32 | clay | Alvaro Lopez San Martin | 4-6 6-1 6-1 |
Averages over each player's completed matches in the selected window (200 vs 129). ATP, WTA & Challenger.
Nijboer R.: 5 days rest · 2 matches, 32 games (7d). 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