on the offensive, while Quintana used combinations to the body. Quintana began the sixth by connecting a solid punch that made his opponent switch to a defensive stance. This pattern continued until the round ended, the fight was stopped between rounds when Santos informed the referee that he was unable to continue, thus awarding Quintana a technical knockout victory. On February 24, 2006, Quintana had his first professional championship fight, when he fought against Raul Bejerano of Argentina for the vacant World Boxing Organization's Latino welterweight title, in an event that took place in Ponce, Puerto Rico. In the tenth round Quintana scored a knockdown when one of his punches injured Berejano. Once his opponent recovered he continued in the offensive and connected several combinations before the fight was stopped by technical knockout. Prior to this fight Berjerano had never been knocked down in his career. On June 24, 2006 Quintana fought against Joel Julio of Colombia in a welterweight title eliminator sanctioned by the World Boxing Association. The boxing card was organized at Caesars Palace in Las Vegas. Quitana dominated the fight's tempo throughout the contest relying on his boxing skills while Julio tried to utilize his strength. The judges awarded Quintana a unanimous decision with scores of 118-110, 117-111 and 115-112. In this match Quintana defended the WBO's Latino welterweight title and won the World Boxing Council's Latino welterweight title. This was regarded as one of Quintana's most important fights, prompting future championship opportunities. On December 2, 2006, Quintana fought fellow undefeated Puerto Rican Cotto, who moved up in weight from Jr. Welterweight. Quintana started the fight boxing and connecting right jabs, the round concluded with both users exchanging combinations. This pattern continued in the second round, with Cotto connecting two solid body punches to Quintana. Quintana began the third round connecting a solid jab to Cotto's face, but the round concluded with Cotto connecting several combinations to the body. In the fifth round Cotto had control of the fight's tempo, and connected several combinations to the body, scoring a knockdown while switching between the orthodox and southpaw stances. Between rounds Quintana indicated that he was unable to continue, the corner wanted to continue but Quintana was unresponsive when the referee asked if he wanted to proceed. The fight was stopped and Cotto was declared the winner, when interviewed Quintana noted that he: "underestimated his velocity. He has