Floyd Mayweather Jnr says concerns over his health mean Saturday night's bout with Andre Berto is definitely his last.
Many are tipping Mayweather to make a U-turn on his threat to walk away from the sport just one win short of a half-century, but the 38-year-old insists there is no going back after this weekend in Las Vegas.
The WBA Super and WBC welterweight champion said, "Number 49 is my last fight. No one is in my shoes. My health is more important.
"If you stick around anything too long, anything can happen. I'm not really worried about losing, but I want to have a sharp mind. You can make a lot of money, but you still want to be able to talk, walk and have a sharp mind."
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