Carlos Lopez Montagud defeated Sergi Perez Contri 6-4 6-2 in the M15 Castellon 1 quarter-final on clay. The upset overturned the form book — Sergi Perez Contri came in ranked #440, leading the head-to-head 1–0. Carlos Lopez Montagud claimed a first win over Sergi Perez Contri in two meetings, narrowing the head-to-head to 1–1.
Lopez Montagud C. took it in straight sets.