On November 20, 2010, Paul Williams and Sergio Martínez met again in a rematch.
Williams came in to the fight on a 6-fight win streak with a 67% KO rate, and was fighting after a gap of 6 months and 12 days. Martínez was on a 1-fight win streak with a 49% KO rate, and fighting after a layoff of 7 months and 3 days.
Sergio Martínez made very easy work of Paul Williams in the rematch, stopping the challenger via KO in the 2nd. Martínez improves his record to 46-2-2 (25 KOs), while Williams adds a loss to his record at 39-2.
On February 9, 2008, the 26-year-old WBO welterweight world champion, Paul Williams (33-0, 24 KOs), faced a 31-year-old Puerto Rican boxer Carlos Quintana (24-1, 19 KOs), in a title defense fight.
Williams came in to the fight on a 33-fight win streak with a 72% KO rate, and was fighting after a gap of 6 months and 26 days. Quintana was on a 1-fight win streak with a 76% KO rate, and fighting after a layoff of 4 months and 11 days.
Carlos Quintana defeated Paul Williams via unanimous decision and wins the WBO title — in his first world-title fight. Quintana improves his record to 25-1, while Williams adds a loss to his record at 33-1.