But by the fourth , Pacquiao was whipping De La Hoya 's head with virtually every power shot he threw , with either hand .
De La Hoya established his jab briefly to stem the onslaught in the third round .
By the fourth , Pacquiao was whipping De La Hoya 's head with virtually every power shot he threw , with either hand .
De La Hoya established his jab briefly to stem the onslaught in the third round .