Mayweather's 50-0 record spans over two decades. He's a five-weight world champion from super-featherweight to super-welterweight. His list of wins includes big names like Oscar De La Hoya, Canelo Alvarez, Shane Mosley, Miguel Cotto, Juan Manuel Marquez, and Pacquiao himself.
But Pacquiao isn't buying it. He's still sore about their 2015 fight, which Mayweather won by unanimous decision. Many fans felt the bout happened too late, with both fighters past their prime.
In a recent chat with Fight Hub TV, Pacquiao didn't hold back:
"I thought I won the fight. I threw a lot of punches even though he's moving around. I can't imagine why I lost the fight. He lost that fight."
Not many in the boxing world agree with Pacquiao's take. Some folks do think Mayweather got lucky at other points in his career, especially in his first fight with Jose Luis Castillo.
At 46, Pacquiao's not done yet. He's gearing up for a WBC welterweight title shot against Mario Barrios at the MGM Grand in Las Vegas. ESPN reports that Pacquiao's age isn't slowing him down as he prepares for this challenge.
When asked about a possible rematch with Mayweather, Pacquiao played it cool: "I don't know, just one at a time. Let's talk about it after the fight."
Pacquiao's also jumped into the ongoing feud between Mayweather and Roy Jones Jr, revealing which fighter he thinks is better. The boxing world keeps turning, and these legends keep stirring the pot.