Bob Arum: Pacquiao vs. Mayweather is OFF!

Pound for pound king Manny Pacquiao's promoter, Bob Arum of Top Rank, has notified the BBC that Mayweather vs. Pacquiao is off.  Pacquiao has refused to agree to random blood testing conducted by the United States Anti-Doping Agency (USADA). 

Earlier this week, Arum conceded that Pacquiao would be willing to test with the agencies that administer the drug testing for professional football and baseball players, but not the USADA.  The potentially richest fight in the history of the sport has fallen apart at the seams. 

Not over purse splits.  Not over the venue.  Not over the fighting weight.  Not over the glove size.  Drug testing.  Can you believe it??  Sad news for the sport of boxing.  More to come.  Stay tuned.