Pacquiao calls out Mayweather Jr. for a fight

By Chris Williams: Upon learning that Floyd Mayweather Jr. perceives him as a totally shot fighter after his recent two defeats in the past year, Manny Pacquiao challenged Mayweather Jr. to fight him so he can prove that he's better. It's understandable for Mayweather Jr. to see Pacquiao as a shot fighter. Look, Pacquiao was