10 Sergio Martínez Greatest Knockouts

10 Sergio Martínez Greatest Knockouts Please support my channel. It can buy me another cup of coffee :) Sergio Gabriel Martínez (born 21 February 1975) is an Argentine professional boxer. He held the WBC interim super welterweight title from 2009 to 2010, and the unified WBC, WBO, Ring magazine and lineal middleweight titles between 2010 and 2014. With six successful defenses of the Ring and lineal middleweight titles, Martínez's 50-month reign as champion ranks as one of the longest in the history of that weight class.He also held the IBO super welterweight title from 2003 to 2004.