Duran Boxing Trainer Tony Rivera Slams Mayweather

In this EsNewsReporting video, boxing trainer Tony Rivera who trained Roberto Duran slams Floyd Mayweather Jr. He also talks about the upcoming Manny Pacquiao vs Jaun Manuel Marquez three.

Click on video below.

[youtube]http://www.youtube.com/watch?v=jH_QNvVQ7hQ[/youtube]