very quick hands, you have to give all the respect to Miguel, he's very fast and he hit me pretty good." Winning and defending the welterweight title Williams, the reigning World Boxing Organization welterweight champion, had been scheduled for a unification bout against IBF welterweight champion Kermit Cintron on February 2, 2008. However, Cintron injured his right hand in November 2007, and was forced to pull out of the fight. After Judah reportedly turned down an offer to take Cintron's place, an offer was instead extended to Quintana. The fight took place on February 9, 2008 and Quintana scored an impressive win over Williams, outboxing him in the bout. On June 7, 2008, Carlos Quintana was defeated by Paul Williams in the first round at 2:15 to lose the welterweight title. Light middleweight division Quintana returned to action on October 25, 2008, this time competing in the light middleweight division. His first fight in this category was against Joshua Onyango, serving as the main event of a card titled "Final Decision" which was held in Arecibo, Puerto Rico. He was able to establish control of the fight's tempo from an early stage, eventually scoring a knockdown in the third. In the fourth round, the referee decided to stop the contest when Onyango was unable to respond to a combination, awarding Quintana a technical knockout victory. Following the outcome of this fight, he announced his decision to move up in weight in a definitive manner. Return to welterweight division Quintana would return to the welterweight division on April 11, 2010 to take on WBC welterweight champion, Andre Berto for the latter's WBC belt. In a rough and rugged slug-fest, Quintana was eventually overwhelmed by the speed and power of the younger Berto and would go on to lose the fight by an 8th-round TKO. On May 5, 2012 Quintana defeated Deandre Latimore by KO in the 6th round to win the NABO light middleweight title. In November 2012, Quintana (29-4, 23KOs) finally decided to call it a day. The Puerto Rican boxer announced his retirement after suffering a fourth-round TKO defeat to Keith Thurman (19-0, 18KOs) at the Citizens Business Bank Arena in Ontario, California on the 24th of that month. Throughout his career he won 29 of 33 professional contests, only coming up short against fellow world champion fighters Miguel Cotto, Paul Williams, Andre Berto and Keith Thurman. Professional boxing