On November 10, 2019, Osorio featured for Toronto in a 3–1 away defeat to Seattle Sounders in the 2019 MLS Cup Final; the opening goal, which was scored by Kelvin Leerdam, was surrounded by controversy, however, as Osorio had lost possession in the lead-up to the goal, after being involved in a collision with Cristian Roldan, which went unpunished by the referee; Osorio later accused Roldan of obstructing him.