early in round three, mayweather hit pacquiao low. pacquiao reacted angrily to the hit, perceiving it as illegal. the fighters exchanged big hits late in the round, energizing the crowd. for the third consecutive round, all three judges scored it in favor of mayweather. in the fourth round, pacquiao chased mayweather around the ring, throwing punches at a rapid pace. pacquiao scored a big left handed hit, causing mayweather to put his high guard up against the ropes. pacquiao took the round on all three scorecards.