WBA welterweight Marcos "El Chino" Maidana (35-3, 31 KOs) stunned the boxing world in December when he defeated up-and-coming superstar Adrien Broner with an unforgettable performance.

Hailing from Margarita, Santa Fe, Argentina, Maidana first emerged on the world scene in 2009, when he won the interim WBA Junior Welterweight World Championship with a stunning sixth-round technical knockout over Victor Ortiz. After three defenses of his title, Maidana lost a 2010 Fight of the Year candidate to Amir Khan, but he regained the belt with another classic against future Hall of Famer Erik Morales in 2011.

In 2012, Maidana joined forces with renowned trainer Robert Garcia (2012 Trainer of the Year) and has since gone undefeated at 4-0 with 3 knockouts.

On May 3rd at the MGM Grand in Las Vegas, Maidana has promised to score one of the biggest upsets of the year when he faces WBC welterweight champion Floyd Mayweather Jr. (45-0, 26KOs) in a unification encounter.

"I am extremely happy to be facing Floyd Mayweather because it will give me the opportunity to show the world that I am the best welterweight in the division," said Maidana.

“I just handed a great defensive fighter his first loss and I plan to do the same to Mayweather. I don’t care whether he’s the best and undefeated. I will bring some real Latino power to him on May 3rd.”