Floyd Mayweather Jr. has been ordered to begin giving testimony Friday in a defamation case against him filed by rival fighter Manny Pacquiao. Mayweather is being sued over statements accusing Pacquiao of taking performance-enhancing drugs. The two, considered the best pound-for-pound fighters in the world, have repeatedly failed to reach terms on what could be the richest bout in boxing history. read more: http://sports.espn.go.com/sports/boxing/news/story?id=6671031