Three Undefeated boxers Floyd Mayweather Jr. defeated

I go through the record of the undefeated boxer Floyd Mayweather Jr. on Boxrec.com. I wanted to find out who are those undefeated boxers he fought. I found out that Floyd had fought three fellow undefeated boxers so far in his career. Unlike his rival, Filipino boxing icon Manny Pacquiao cracked eight undefeated boxers O's so far. But these three boxers that Floyd defeated, were not just good boxers---they were elite undefeated boxers---at the time Floyd beat them.

Here are the three previously undefeated boxers that Mayweather Jr. handed their first ever career defeat.

[Read Also: http://theboxingdiary.com/lists/undefeated-boxers-list]

Diego Corrales

Floyd's record was 24-0 when he stopped the late Diego Corrales in January 20, 2001. He was a couple of days short prior to his 24th birthday on the following month. Corrales was 33-0 and only 23 years old. Although he is slightly younger than Floyd, but he is obviously more experienced. Many believed Corrales might be the guy that will defeat Floyd. But Mayweather knocked him down four times before Corrales' corner threw a towel after the fifth knockdown that happen in tenth round. Corrales' "O" erased.

Ricky Hatton

The "Hitman" was 43-0 when he moved up to welterweight division to challenge Floyd Mayweather Jr. for the WBC welterweight title. Floyd was 3-0. Early in the fight, Hatton's all out aggression found success. He landed a punch that staggered Mayweather to the delight of the British crowd in attendance at MGM Grand, Grand Garden Arena. But Floyd was faster, more skilled, and too accurate with his punches. In the tenth round Floyd dropped Hatton with a left hook. Hatton's face slammed to the ring post before he went down. He got up but obviously hurt. The referee allowed the fight to continue. Mayweather unleashed flurry of punches. A left hook sent Hatton down again and referee Cortez stopped the fight without bothering to count. Hatton's "O" strike-out. 

Saul Canelo Alvarez

Canelo Alvarez, 23 years old, was 42-0 when he fought Floyd on September 14, 2014 for the light middleweight unification bout. Alvarez has all what it takes to defeat the older Mayweather. He's young, much bigger, perhaps stronger. But Mayweather aged 37 once again showed that he's still the best. Mayweather dominated Canelo in over 12 rounds of tactical fighting. But the official verdict, was majority decision. Judge CJ Ross scorecard, which reads 114-114 was in question. Alvarez's "O" cracked.