By Miguel Rivera

Floyd Mayweather Jr. (46-0, 26KOs) appears confident that Marcos Maidana (35-4, 31KOs) is not capable of fighting any better than he did in their previous fight on May 3rd. Mayweather will defend his WBC/WBA welterweight titles against Maidana in a rematch on September 13th at the MGM Grand in Las Vegas. Their fight bout was won by Mayweather with a twelve round majority decision.

"Robert Garcia is one of the best coaches in the world. [Maidana] can go with the best coach, but I'm the best fighter. I don't think [Maidana] can fight any better," Mayweather said.

And while Maidana has promised to win the fight by knockout, Mayweather is planning for a knockout victory of his own.

"Of course I want the knockout. What happens is that I fight to win. If the opportunity for a knockout is there, then I'll take it. This is like a game of chess, every move I make is calculated," Mayweather said.