Mike Tyson appears to have backed Manny Pacquiao to win his highly-anticipated bout against Floyd Mayweather by insisting his fellow countryman will struggle to deal with the Filipino 's pace . Mayweather is the bookmakers ' favourite to win the Las Vegas showdown however Tyson believes the undefeated American will have to be at his best if he is to extend his unbeaten run . Former undisputed heavyweight champion of the world Tyson said : 'When you think about the two fighters , the only people who gave Manny Pacquiao the most difficult time of his career are people who throw 100 punches a round - Timothy Bradley Jnr and Juan Manuel Marquez . Mike Tyson believes Floyd Mayweather will struggle to deal with Manny Pacquiao 's pace and agility . Pacquiao is preparing for his highly-anticipated bout against Mayweather . 'Floyd does n't throw anywhere near 100 punches a round . He is more of a scientific fighter , he really plots a lot , he poses whereas Pacquiao is feinting and moving around . That 's just my opinion , Pacquiao has perpetual motion he 's all over the god damn place . 'Floyd has to fight in the first couple of rounds , he 's going to lose the rounds if he 's laid back . He has to come out punching , keep the jab and spin with him . ' The two fighters will go toe-to-toe at the MGM Grand on May 2 in a fight which is worth $ 300m . Mayweather has also started preparations for his Las Vegas showdown with Pacquiao .
Mike Tyson bout Floyd Mayweather faces tough test on day 2 . Mayweather is going to struggle with rival Pacquiao 's pace , says Tyson . Oscar De La Hoya has also convinced Pacquiao to upset the odds . Freddie note : mark Haymon is rival Pacquiao 's sparring partner . CLICK HERE for all the latest Mayweather vs Pacquiao news .