By Edward Chaykovsky

If they would have fought five years ago, Hall of Fame trainer Freddie Roach admits that his fighter, Manny Pacquiao, would have possibly lost to Floyd Mayweather Jr. That round of negotiations was unfruitful. Boxing fans rejoiced last week when Mayweather-Pacquiao was finalized for May 2nd at the MGM Grand in Las Vegas.

Times have changed for Roach. He believes Mayweather is a fighter with "shot legs" and won't be able to escape Pacquiao's incoming punches for twelve rounds.

As the fighter prepare for training camp, Roach is predicting that Pacquiao will knock Mayweather out "very late in the fight."

Mayweather is fast and regarded as the best defensive fighter in boxing. Roach feels Mayweather might be underestimating some of Pacquiao's abilities.

"Five years ago, maybe Floyd would've beaten Manny," Roach told reporter Skip Bayless. "[But] Manny has more heart right now. You really don't realize just how fast Manny is or how hard he hits until you actually get hit by him."