The 32-year-old Vasquez, Jr. (24-6-1, 19 KOs), the son of the great 3-time division world champion Wilfredo Vasquez, fights out of the boxing hotbed of Bayamon, Puerto Rico, which is known for producing great boxers including the late Hall of Famer Hector "Macho" Camacho. He captured the vacant World Boxing Organization (WBO) super bantamweight world title in 2010, stopping previously unbeaten Marvin Sonsona (14-0-1) by way of a fourth-round knockout. Lopez (34-5, 31 KOs), fighting out of Caguas, Puerto Rico, is a former WBO super bantamweight and featherweight world champion. From 2008 to 2010, "JuanMa" was one of the most feared punchers in boxing, as well as one of its most popular because of his electrifying performances in the ring and engaging personality. During this stretch, he developed into one of the leading pound-4-pound fighters in the working, defeating a Who's Who of the top super bantamweights and featherweights in the world such as 34-1 Daniel De Leon (TKO1), 33-1 Sergio Medina (TKO1), 54-6-2 Gerry Penalosa (RTD10), 37-1-1 Steve Luevano (37-1-1) and 39-5 Rafael Marquez (RTD8).