On April 12, Manny Pacquiao had his best fight in the last few years. He defeated Timothy Bradley in their rematch for the WBO welterweight title. The No.1 boxer in the sport, however, wasn’t impressed.

"I don't see the same pop in Pacquiao's shots -- me, myself, I don't see the same snap in his shots," Floyd Mayweather said in a recent teleconference. "He's getting tired and he wasn't getting tired before. So, I mean, I'm seeing something totally different. Whereas me, I'm still sharp, I'm still smart, I'm not getting fatigued, I wasn't getting fatigued from the beginning.”

Mayweather told reporters that he watched the fight from start to finish. It was the first complete fight of Pacquiao’s that Mayweather had seen, since PacMan defeated Miguel Cotto in 2009. According to the undefeated boxer, Pacquiao only won because his competition was not up to par.

"I think both fighters fought like amateurs," Mayweather said. "I thought Pacquiao fought like an amateur also, and I wasn't pleased with his performance. He got the victory the best way he knew how but I wasn't pleased with his performance at all."

Mayweather’s opinion that Pacquiao is a different fighter is not an unpopular one. Many experts feel that Pacquiao isn’t as good as he was five years ago, when a potential mega-fight between the two seemed like a real possibility. Pacquiao lost twice in 2012, including a knockout to Juan Manuel Marquez, and would be a decided underdog in a fight with Mayweather.

Unlike Pacquiao, Mayweather continues to look as good as he’s ever been. In his most recent bout, he defeated Canelo Alvarez in a split decision, and the judge that scored the fight in Alvarez’s favor soon stepped down, amid the controversy. Mayweather has four fights remaining on his contract, and his opponent will be a sizeable underdog in each one.

Even though Pacquiao might not have the power that he once did, he’s still proven himself to be among the best in the sport. His victory over Bradley was decisive, not surrounded in controversy, like their previous bout. Heading into the fight, Bradley had shown himself to be a strong competitor, defeating both Marquez and Ruslan Provodnikov in 2013.

On the teleconference, Mayweather reasserted that he won’t fight Pacquiao, who remains with promoter Bob Arum and Top Rank. Arum continues to challenge Mayeather, on Pacquiao’s behalf.

On May 3, Mayweather will put his perfect record on the line against Marcos Maidana. The 37-year-old Mayweather is a heavy favorite.