How good is Cotto's chin?

[STREET CLEANER]

Say again???

You wouldn't quit getting hit with plasters?

and the ref stopped the pacquiao fight.

In the Pac fight he told his corner to stop it and they kept sending him out. Brave to not want to go in and do it because your corner told you it is the last round.

He has never been laid out. Knocked down yes but not stopped on a flurry of punches or a one punch KO. He breaks down mentally and quits.