Floyd Mayweather Jr., right, lands a punch against Miguel Cotto during a WBA super welterweight title fight, Saturday, May 5, 2012, in Las Vegas. (AP Photo/Eric Jamison)
Floyd Mayweather celebrates his unanimous-decision win over Miguel Cotto on Saturday night in Las Vegas. Mayweather takes Cotto's WBA super welterweight title with the win.
Floyd Mayweather reacts after beating Miguel Cotto on Saturday. Mayweather won by scores of 117-111, 117-111 and 118-110.
Floyd Mayweather fights off a charging Miguel Cotto. Mayweather took a few good shots from Cotto during the fight, but not enough to sway the judges.
Throwing his weight around
Miguel Cotto pushes Floyd Mayweather up against the ropes. Cotto enjoyed a natural weight advantage over Mayweather, but couldn't do anything with it.
Miguel Cotto exchanges punches with Floyd Mayweather in the first round of their fight. Mayweather improved to a perfect 43-0 with Saturday night's win.
Quite a crew
Floyd Mayweather enters the ring surrounded by an entourage that included rapper 50 Cent, pop singer Justin Bieber and pro wrestler Triple-H.
Gaining an advantage
Miguel Cotto throws punches against Floyd Mayweather. Despite doing some damage, Cotto fell to 37-3 with Saturday's loss.
Canelo Alvarez raises his arms after being declared the winner by unanimous decision over Shane Mosley in their WBC super welterweight title fight Saturday in Las Vegas. The 21-year-old Alvarez handily defeated the 40-year-old Mosley.
Canelo Alvarez reacts after beating Shane Mosley. Alvarez improved to 40-0-1 with the victory.
Canelo Alvarez rocks Shane Mosley in the 10th round of their fight. Mosley, who 46-8-1 with one no-contest.
Canelo Alvarez winds and fires against Shane Mosley. Alvarez was bloodied by a Mosley head-butt in the third round, which opened a cut above the champion's left eye.
Shane Mosley lands a left to the head of Canelo Alvarez. It was one of few solid shots landed by Mosley, who hasn't won a fight since 2009.
Canelo Alvarez moves in on Shane Mosley in the first round. Alvarez defended his belt for the fourth straight time.
Steve Forbes connects with a left to the head of Jessie Vargas. Despite the nice shot by Forbes, Vargas improved to 18-0.
Rocked by a left
Carlos Quintana knocks DeAndre Latimore to the canvas with a left hook. Quintana improved to 29-3.
Jessie Vargas celebrates his decision win over Steve Forbes on Saturday night's undercard. Vargas remained undefeated with the win.
Carlos Quintana connects with a right to the head of DeAndre Latimore. With the loss, Latimore fell to 23-4.
DeAndre Latimore cannot get up in time after being knocked to the ground by Carlos Quintana in the sixth round Saturday night in Las Vegas.
Smell the glove
Steve Forbes connects with a left to the head of Jessie Vargas. Forbes fell to 35-11 with the loss.