Miguel Ángel Cotto Vázquez is a Puerto Rican former professional boxer who competed from 2001 to 2017. He is a multiple-time world champion, and the first Puerto Rican boxer to win world titles in four weight classes, from light welterweight to middleweight. In 2007 and 2009, he reached a peak active pound for pound ranking of seventh by The Ring magazine. Cotto started out his career as a hard-hitting pressure fighter, but evolved over the years into a more refined boxer-puncher as he moved up in weight.

Carlos Quintana is a retired Puerto Rican professional boxer. As an amateur Quintana represented Puerto Rico. He debuted as a professional in 1997. On February 24, 2006, he participated in his first professional championship fight, defeating Raul Bejerano for the World Boxing Organization's Latino welterweight championship. His first defense took place on June 24, 2006, when he defeated Joel Julio by unanimous decision in a welterweight title eliminator. In this fight he also won the World Boxing Council's Latino welterweight championship. His first world title fight took place on December 2, 2006, when he fought against Miguel Cotto for the World Boxing Association welterweight title. Cotto won the fight by technical knockout. On February 9, 2008, Quintana challenged Paul Williams for the WBO welterweight championship, winning the fight by unanimous decision. He entered the Light Middleweight division to face Deandre Latimore, knocking Latimore out to win the NABO Light Middleweight championship.