Sylvester Stallone 'ninety nine Percent Certain' Mayweather Pacquiao Rematch Will Happen
[[tmz:video id=”0_a62a3jrg”]] 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. “I think it’s about 99%…