With the biggest fight in boxing history set to take place in just over a month , Floyd Mayweather has shown that his preparation is in full flow . The undefeated champion takes on Manny Pacquiao in Las Vegas on May 2 as he puts his 'legend status ' on the line to give the fighting world a clash that it 's been craving for a number of years . In the short video , Mayweather talks about the letters 'T.B.E ' on all his training gear and how he plans to never be forgotten . Floyd Mayweather punches the body pad as he continues his preparation for the biggest fight in boxing . The undefeated champions wants to leave a legacy in the fighting world and be known as 'the best ever ' Mayweather spoke about Muhammad Ali being 'the greatest ' but he wants his own title to be remembered . He said : 'T.B.E . stands for , the best ever . I want to leave my own mark in the sport of boxing . 'No different from how Ali ( Muhammad ) was known as the greatest . When someone says - the best ever - the first person I want them people to think about is Floyd Mayweather . ' Whatever the outcome of the bout , the undefeated champion is certainly going to put on a show against his tough Filipino opponent . The bout against WBO champion Pacquiao at the MGM Grand is expected to total $ 300million - in what will be the most expensive bout in boxing history . In the UK , Sky Sports are expected to win the bidding rights to broadcast the fight . The $ 300million fight is the most expensive in boxing history and Sky Sports are expected to win the rights . Mayweather uses the punch bag to improve his punching power and he 'll need it to beat Pacquiao .
Floyd Manny Pacquiao posts pump-up video of his training preparation . The undefeated champions faces Mayweather in Las Vegas , May 2 . Manny Pacquiao wants to be remembered as 'The Best Ever ' Click here for all the latest boxing news .