
This charismatic New York fighter is one of the few to be undefeated both in boxing and mixed martial arts. He faced Tim Sylvia, whom he knocked out in the first round. Already retired from boxing and more than 40 years old, he tried his luck in mixed martial arts in 2009. In 2002, he had a title opportunity against Wladimir Klitschko, but fell short when he was stopped in the sixth round.

Mercer was the World Boxing Organization heavyweight champion in 1991, when he knocked out Tommy Morrison. Still, she has lost three of her past four fights. Once getting into MMA, she became the UFC's bantamweight champion when she knocked out Ronda Rousey. She initially started in boxing and kickboxing, winning the welterweight belt of the World Boxing Association and World Boxing Council with a solid record. Holm is one of the success stories of such a move. After that, he returned to boxing and even fought this past May at almost 50 years old. He went on to the Octagon to face Randy Couture at UFC 118 in August 2010, when he lost by submission in the first round. He conquered titles at middleweight, super middleweight and cruiserweight, and he became the heavyweight champion of a lesser known organization. "Lights Out" Toney was an excellent boxer. Here is a look at some of the most notable boxers to enter the octagon. The most sound case of transitioning to MMA was that of James Toney, who lost to Randy Couture when he invaded the octagon.

Some put together decent careers but could not conquer important titles. There have been dozens of boxers who ventured into the world of mixed martial arts. Salvador Rodríguez, Columnist, ESPN DeportesĪ history of moving from boxing into the MMA world

#MIA ST AMERICAN BOXER UPGRADE#
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