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Victory! - In a unanimous decision, Floyd Mayweather Jr. defeated Miguel Cotto to win the WBA super welterweight title at the MGM Grand Garden Arena on Saturday night in Las Vegas, Nevada.(Photo: Al Bello/Getty Images)

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Money Posse - Justin Bieber and Curtis "50 Cent" Jackson enter the ring with Mayweather.(Photo: Al Bello/Getty Images)

Photo By Photo: Al Bello/Getty Images

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Mayweather's Valet - Bieber holds two belts for Mayweather before the champ takes on Cotto.(Photo: Al Bello/Getty Images)

Photo By Photo: Al Bello/Getty Images

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Words of Support - Mayweather gets last-minute instructions from his trainer before heading into the ring. He entered — and left — the ring undefeated. (Photo: AP Photo/Eric Jamison)

Photo By Photo: AP Photo/Eric Jamison

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Trading Blows - Cotto exchanges punches with Mayweather in the first round of their match. "You're a hell of a champion," Mayweather told Cotto after the match, writes the Associated Press. "You're the toughest guy I ever fought."(Photo: AP Photo/Isaac Brekken)

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Connection - Though he was able to land a few punches, Cotto lost the fight, but was still pleased with his performance. "The judges said I lost the fight, I can't do anything else," Cotto told the media. "I'm happy with my fight and performance and so is my family. I can't ask for anything else."(Photo: AP Photo/Eric Jamison)

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Taking in the Action - Rapper Lil Wayne watches the fight.(Photo: Al Bello/Getty Images)

Photo By Photo: Al Bello/Getty Images

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Pow! - In the fourth round, Mayweather connects with the side of Cotto's head. Mayweather earned a minimum of $32 million for the fight, while Cotto was guaranteed $8 million.(Photo: AP Photo/Eric Jamison)

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On the Ropes - A ferocious Cotto throws a string of punches against Mayweather in the seventh round. AP stats showed Mayweather landing 179 of 687 punches to 105 of 506 to Cotto.(Photo: AP Photo/Eric Jamison)

Photo By Photo: AP Photo/Eric Jamison

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Fighting Back - Not to be outdone, Mayweather strikes back against Cotto.(Photo: AP Photo/Isaac Brekken)

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Taking a Rest - During a break before the 10th round, Mayweather sits in his corner.(Photo: AP Photo/Isaac Brekken)

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Mixing It Up - During the 11th round, Cotto managed to get in a couple of close punches. The fighter, from Caguas, Puerto Rico, has held a world title every year since 2004.(Photo: AP Photo/Isaac Brekken)

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Water Break - Mayweather gets cooled off between rounds. With the fight over, Mayweather will shortly be turning himself in to serve a three-month term for domestic violence. (Photo: AP Photo/Eric Jamison)

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We're No. 1 - After Mayweather finished off Cotto, he hung out with his friends in the ring: Bieber, rapper Lil Wayne, 50 Cent and a guest.(Photo: Al Bello/Getty Images)

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Champ - Mayweather adds a new belt to his collection.(Photo: Ethan Miller/Getty Images)

Photo By Photo: Ethan Miller/Getty Images