Wednesday April 29th, 2015

Just four days before the most lucrative boxing match ever, Manny Pacquiao told the Associated Press that he "knows" he's going to win his fight against Floyd Mayweather on Saturday. 

"I cannot say he is that difficult an opponent," Pacquiao told AP. "My confidence right now is different than the other fights I had. I feel excited, this is it. I have to prove something."

The Filipino fighter is a 2-1 underdog in the fight, according to Las Vegas oddsmakers.

Pacquiao appeared Tuesday at a rally at the Mandalay Bay Hotel in Las Vegas where fans watched his most recent music video and were entertained by dancers. He told the crowd to relax before emphasizing, "I know I'm going to win the fight in the ring."

• Mayweather, Pacquiao grace 'flip cover' of SI

The remarks marked a shift in tone for Pacquiao, who previously expressed admiration or respect for past marquee opponents, such as Oscar De La Hoya, Miguel Cotto and Juan Manuel Marquez. 

Mayweather expressed skepticism at Pacquiao's remarks, noting Pacquaio's game plan of coming forward and throwing lots of punches was hackneyed. 

"It hasn't worked in 19 years and 47 fights," Mayweather said, referring to his nearly two-decade-long undefeated streak.

Mayweather and Pacquiao will fight at 11 p.m. EST on Saturday at the MGM Grand in Las Vegas. 

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