Jeroen Vanneste defeated Marvin Netuschil 7-6 6-3 in the M15 Troisdorf 1 quarter-final on clay. The upset overturned the form book — Marvin Netuschil came in leading the head-to-head 1–0. Jeroen Vanneste claimed a first win over Marvin Netuschil in two meetings, narrowing the head-to-head to 1–1.
Vanneste J. took it in straight sets.