McJoe Arroyo Acevedo (born December 5, 1985) is a Puerto Rican professional boxer who held the IBF junior bantamweight title from 2015 to 2016. As an amateur, he represented Puerto Rico in international competition, winning a bronze medal at the 2007 World Amateur Boxing Championships in the bantamweight category. His twin brother, McWilliams Arroyo, is also a professional boxer. The brothers are the only pair of twins to win medals at the World Amateur Boxing Championships, and the second twins to qualify for the Olympics in boxing. Early life McJoe was born along his twin brother, McWilliams, in the municipality of Ceiba in the northeast coastal region of Puerto Rico's main island. Arroyo and his twin, were introduced to boxing in their childhood. At the age of 12, they entered Gimnasio Fito Ramos, a gymnasium located in the municipality of Fajardo, Puerto Rico. In this locale they met Anthony Otero, a retired amateur boxer, who became their trainer during this stage of their careers. They initially took up the sport as a hobby, but after six fights they began establishing a pattern of only spending a limited amount of time inactive during a month, visiting the gymnasium at least every two weeks. Since the early stages of their careers, the brothers decided to fight in different divisions, in order to avoid fighting against each other. However, they participated in sparring sessions, performing as they would do against other sparring partners. Amateur career Arroyo represented Puerto Rico in international competition. He won Bronze at flyweight at 2006 Central American and Caribbean Games. In 2007 he participated at the Amateur World Championships and lost in the semifinals to eventual Russian winner Sergey Vodopyanov 9:20, qualifying for the 2008 Olympic Games. After recovering, Arroyo participated in the XXVIII International Golden Belt Tournament organized in Constanta, Romania. Here he defeated local Alex Spatariu in his first fight, who abandoned the fight in the third round. In the semifinals he defeated Mirzhan Rakhimzanov of Kazajistan by points, with scores of 21-16. In the finals he fought against Veira de Jesús of Brazil, defeating him by points (28-16). As part of their training the boxing team moved to South Korea, in order to assimilate the time changes. After training and participating in a series of exhibition matches, the team traveled from Korea to Beijing. Professional career On December 8, 2009, the Arroyo brothers issued a press