Horrors: Pacman falls

Juan Manuel Marquez, from Mexico, left, celebrates after knocking out Manny Pacquiao, from the Philippines, in the sixth round of their fight yesterday, in Las Vegas. Referee Kenny Bayless tends to Pacquiao at right. (AP Photo/Julie Jacobson)

It was a shot that shocked the world: a short, crisp and crushing right hand that Juan Manuel Marquez unloaded and exploded on Manny Pacquiao’s jaw.

What should Manny Pacquiao do next?