Mayweather has begun sparring for his super fight with McGregor. He posed with young, up-and-coming prospect Devin Haney after taking the 18-year-old six rounds. Haney, who is 15-0 as a professional already and 22 years Mayweather’s junior, is preparing for his lightweight contest with Erick Daniel Martinez on June 24.
Mayweather spars six rounds against Haney in prep for McGregor fight
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