Three years after their so-called "Fight of the Century", Filipino boxer Manny Pacquiao has challenged Floyd Mayweather to a rematch.<br />He called out the now-retired Mayweather after retaining his WBA world welterweight title on Saturday.<br />Five-weight world champion Mayweather was ringside in Las Vegas watching Pacquiao beat American Adrien Broner by unanimous points decision. <br />Mayweather's promotion company ruled out a rematch, saying the unbeaten champion had no interest in fighting Pacquiao and was enjoying retirement. <br />
