Veteran trainer Abel Sanchez believes Floyd Mayweather Jr. will have a much easier time with Manny Pacquiao in their potential rematch in 2019.

Mayweather won a twelve round unanimous decision over Pacquiao in 2015 - in a contest that shattered all financial records and pay-per-view buyrate figures for combat sports.

There was no dispute over the outcome, but Pacquiao claimed that he entered the contest with a pre-existing should injury that required surgery in the aftermath of his defeat.

According to Sanchez, Mayweather is the master of the rematch.

He beats Jose Luis Castillo much easier in the rematch, and the same can be said of Floyd's second fight with Marcos Maidana.

"It could be even worse than the first time. I think Floyd is the type of fighter that now that he has twelve rounds under his belt against this man, he knows exactly what he needs to do, he’s smart enough to have figured it out just like he did against Maidana. It would be the same type of fight but it will be a little easier for Floyd," Sanchez told On The Ropes Boxing Radio.

Mayweather, who is 41-years-old, retired from boxing last August after snapping a two-year retirement to score a stoppage over UFC superstar Conor McGregor.

And Pacquiao, who is 39-years-old, captured the WBA "regular" welterweight title in July with a knockout of Lucas Matthysse.

"I don’t think it has any significance in the big scheme of things. It would be more of a spectacle and an event where Floyd always wants to grandstand and up somebody by announcing it on the day of the fight. I think that fight came too late and people recognize that it is not going to be any better, it’s going to be worse because they aged a little more even now. If the fans want to buy it, good, if they don’t want to buy it, that’s okay too. I think every fight has its place, but let’s make sure we don’t confuse it with a real fight," Sanchez said.