Adrian Oetzbach defeated Kai Lemstra 6-4 6-3 in the M15 Allershausen 1 semi-final on clay. The upset overturned the form book — Kai Lemstra came in leading the head-to-head 2–0, but Adrian Oetzbach had been the form player, winning 3 of their last 5 on clay. Adrian Oetzbach claimed a first win over Kai Lemstra in three meetings, narrowing the head-to-head to 2–1.
| Date | Tournament | Round | Surface | Winner | Score |
|---|---|---|---|---|---|
| 2024-03-19 | M15 Alaminos-Larnaca 2 | R32 | clay | Kai Lemstra | 6-1 3-6 7-6(6) |
| 2023-08-22 | M15 Trier 1 | R32 | clay | Kai Lemstra | 7-6(5) 6-3 |
Averages over each player's completed matches in the selected window (200 vs 49). ATP, WTA & Challenger.
Each player's serve crossed against the other's return, converted to expected hold of serve. Recent completed matches, ATP, WTA & Challenger. About