Trainer Floyd Mayweather Sr. believes Juan Manuel Marquez will likely knock Manny Pacquiao out again in a fifth fight. Marquez knocked Pacquiao out cold two weeks ago in Las Vegas, after catching the Filipino star with a single right hand in the sixth round. There is now talk of a fifth fight at the some point in 2013. Mayweather Sr. doesn't expect Pacquiao to ever fully recover from the brutal knockout and advises him to walk away while his health is still good.
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