If Lance Armstrong can win 7 Tour de France title under medication, any welterweight can hit 1300 lb force in boxing just the same.
you realize Marquez didn't generate that 1300lbs* of force by himself? Pacquiao jumping into it had a great deal to do with it. *assuming that number is even correct
Forreal!! That could've caused some serious injury. Good thing he was knocked out [health wise] because if he wasn't, he probably would've experienced some serious agony there. At least he was numb of all the pain for a while.