TMZSports.com

Sylvester Stallone '99 Percent Certain' Mayweather Pacquiao Rematch Will Happen

Sylvester Stallone says he's almost positive Floyd Mayweather will accept Manny Pacquiao's challenge and take a rematch with the boxer in the near future ... and Sly's spelling it out for "TMZ Sports."

Click here for info about our online advertising practices.