Did Shawn Porter knock Pacquiao down on thier sparring?

Headgear is to prevent cuts and abrasions while training before an upcoming bout. Blunt heavy blows to the side of the head or anywhere for that matter can produce a KO. Regardless, if a fighter gets knocked down during sparring, it makes no difference, as sparring is to emulate styles of your opponent and to LEARN during training. I'm sure, if it's true, and who cares, Pacquiao or any professional will be ready come fight night.