Eduard Esteve Lobato defeated Alvaro Lopez San Martin 5-7 6-1 7-6 in the M15 Castellon 1 quarter-final on clay. The upset overturned the form book — Alvaro Lopez San Martin came in leading the head-to-head 2–0. Eduard Esteve Lobato claimed a first win over Alvaro Lopez San Martin in three meetings, narrowing the head-to-head to 2–1.
Esteve Lobato E. came through in three sets.