Floyd Mayweather, 45 years young, knocks out MMA star Mikuru Asakura
Floyd Mayweather is 45. He could probably do this when he’s 75.The unbeaten Hall of Famer knocked out Mikuru Asakura in the second round of a scheduled three-round exhibition on the Rizin 38 card in Saitama, Japan.The 30-year-old…