Claim: Marco Antonio Barrera  a Mexican former professional boxer who competed from 1989 to 2011 and was best known for his duology with Manny Pacquiao, who is regarded as one of the greatest professional boxers of all time.
Evidence: Marco Antonio Barrera Tapia (born January 17, 1974) is a Mexican former professional boxer who competed from 1989 to 2011. Barrera is well known for his trilogy with fellow Mexican legend Érik Morales, his duology with Manny Pacquiao, and his rivalry with Naseem Hamed and Juan Manuel Márquez. ESPN ranked Barrera as number 43 on their list of the 50 greatest boxers of all time.