What happened at a boxing match between Mayweather and Manny Pacquiao?

The news broke this afternoon that Manny Pacmano, the two-time world champion boxer, has been diagnosed with a heart condition.The 29-year-old Pacquillo was reportedly forced to withdraw from a boxing fight with Floyd Mayweather Jr. in May due to an unknown medical condition.Mayweather, a former lightweight champion, knocked Pacmanoa out in less than five rounds