Santos Laguna and Quintero also qualified for the 2014 Copa Libertadores as the best team from the 2013 Apertura that failed to qualified for 2013–14 CONCACAF Champions League. Quintero made his first appearance in the tournament on 11 February 2014, the first match of the group stage. Quintero had one assist as Santos defeated Arsenal de Sarandí. He recorded another assist on 18 February in a 2–0 win over Peñarol and his third assist of the tournament on 18 March in a 3–0 win against Deportivo Anzoátegui SC. On 25 March Quintero scored twice and assisted for two more as "Los Guerreros" defeated Peñarol 4–1, securing Santos's place in the round of 16. Santos were upset by Club Atlético Lanús in the round of 16 by an aggregate score of 4–1, with the 1 goal being scored by Quintero.