Floyd Mayweather wasted no time taking shots at Shane Mosley during his Las Vegas media day presser.

"I think Shane is acting out of character. Why would someone wait until they were 38 years old to get a tattoo?" Mayweather said. "I think he feels the pressure of this fight and is thinking about how he is going to beat me."

PHOTOSFloyd Mayweather Jr. and "Sugar" Shane Mosley in training

Mayweather (40-0, 25 KOs), as usual, declared himself as unbeatable. But Mosley (46-5, 39 KOs) is an entirely different story, according to Mayweather. He pointed to Mosley's five losses as the primary reason.

"There is a blue print to beat him because he has lost five times already. But there is no blueprint to beat me," Mayweather continued. "I think he feels the pressure. I don't have any pressure. I am just getting ready to fight."

Mayweather said: "Mosley has problems with boxers. He lost to Winky Wright from a one-handed jab in his face all night long. Now he is facing someone sharp as a razor with two hands. He has been dropped and wobbled on numerous occasions. If he tries to bum rush me, he is going to get clipped."

Mosley hasn't fought since scoring a ninth-round TKO of Antonio Margarito in January 2009. Mayweather scored an easy unanimous decision win over Juan Manuel Marquez last September.

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Mosley obviously had a different point of view when he spoke from his training camp earlier this week. Mosley said he's intent on not letting Mayweather's bravado get under his skin.

"I think a lot of people who have fought Floyd have let his talking get to them and they into the fight angry," Mosley said. "They are fighting with their emotions when they are in the ring. I'm not going to do that. I know how I want to fight Floyd and I know what I want to happen. So I'm going to to what I have to do to win."

Mosley credited his trainer Naazim Richardson for his work during training camp and believes he will be the difference in the fight. Richardson gained headlines when he spotted Margarito's trainer wrapping his fighter's hands with an illegal substance.

"Naazim has definitely re-energized my career," Mosley said. "He is one of the hardest working trainers in the business. You can find him in the middle fo the night watching film so that he knows the other fighter inside out. It's all about strategy with Naazim."

PHOTOSFloyd Mayweather Jr. and "Sugar" Shane Mosley in training

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