Mayweather relishing last ever fight

Floyd Mayweather says he chose Andre Berto as his opponent for his final fight because he is a "rough and tough" competitor.

Mayweather is unbeaten in 48 professional bouts and victory over fellow American Berto - who has won 30 of his 33 professional fights - in Las Vegas on Saturday would see him equal Rocky Marciano's career record of 49-0.

Many believe he will not be able to resist attempting to break Marciano's mark, but the 38-year-old says his health is more important.

Video courtesy of Showtime.

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