Dimitar Kuzmanov defeated Jozef Kovalik 5-7 6-1 7-6 in the M25 Samobor quarter-final on clay. The upset overturned the form book — Jozef Kovalik came in leading the head-to-head 2–0, but Dimitar Kuzmanov had been the form player, winning 5 of their last 7 on clay. Dimitar Kuzmanov claimed a first win over Jozef Kovalik in three meetings, narrowing the head-to-head to 2–1.
Kuzmanov D. came through in three sets.
Clay: level 1–1 · Hard: Kovalik J. leads 1–0