Jon "Bones" Jones faced challenges to his UFC light heavyweight championship from "Rampage" Jackson and Rashad Evans, and both times, he came out victorious and retained his title. In his bout with Jackson, he became the youngest fighter in UFC history in a title defense at 24 years, 67 days old. In UFC 140, he scored a second-round victory over former champ Lyoto Machida.
On May 5, Floyd Mayweather Jr. scored a unanimous decision over Miguel Cotto to win the WBA junior middleweight title. With that victory, Mayweather has won a championship in six different weight classes. He also scored a controversial fourth-round knockout against Victor Ortiz to take the WBC welterweight title. Mayweather improved to 43-0 (26 KOs) overall and 20-0 in title fights.