Floyd Mayweather Jr., the richest athlete in the world and the best pound-for-pound boxer, once said he had never heard of Ronda Rousey, the UFC women's bantamweight champion and MMA's biggest star.

Surely, he knows who she is after Wednesday night's ESPY Awards.

Rousey was named Best Fighter, beating out Mayweather Jr. and fellow boxers Gennady Golovkin and Terence Crawford, and UFC lightweight Donald Cerrone.

But the real news came after she won the award, which was given out before the ABC broadcast.

"I wonder how Floyd feels [about] being beaten by a woman for once," Rousey said on the red carpet during ABC's preshow coverage. "I'd like to see you pretend to not know who I am now."

Mayweather has a history of domestic violence. He was sentenced to 90 days in jail in Nevada as part of a plea in a domestic assault case involving the mother of his three children. He served more than 60 days of that sentence.

Rousey also won Best Female Athlete at this year's ESPYs.

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Rousey (11-0, 5-0 UFC) defends her title at UFC 190 against Bethe Correia on Aug. 1 in Brazil.