Sebastian Prieto defeated Rodolfo Ramos Paganini 2-6 6-4 6-2 in the Argentina 1 Masters 4 semi-final on clay. The upset overturned the form book — Rodolfo Ramos Paganini came in leading the head-to-head 2–0. Sebastian Prieto claimed a first win over Rodolfo Ramos Paganini in three meetings, narrowing the head-to-head to 2–1.
Prieto S. came through in three sets.