Pedro Sakamoto defeated Tomas Lipovsek Puches 6-2 6-4 in the M15 Pinamar 3 quarter-final on clay. The upset overturned the form book — Tomas Lipovsek Puches came in leading the head-to-head 1–0, but Pedro Sakamoto had been the form player, winning 5 of their last 6 on clay. Pedro Sakamoto claimed a first win over Tomas Lipovsek Puches in two meetings, narrowing the head-to-head to 1–1.
Sakamoto P. took it in straight sets.