I hear a lot of things like if one fighter gets K.O'd, his punching resistance is diminished. Ex : Martinez was K.O'd by Jr in 12th and since then he hasn't the same punching resistance . ( i'm not talking here about the age, shape, etc) :think I mean wtf , its true or its just a myth ?! Can a K.O punch make you more vulnerable to the hard punches ? It changes something into your body ? :think
yeah it's true. Sometimes the affects aren't as great though obviously like with Duran after Hearns. Once you get a concussion, it's a lot easier to get another one. They've been studying this a lot with football recently. Plus in boxing, it also comes down to something mental with fighters as well
This^ + "Most" fighters once KO'd subconsciously also don't take the same risks as before suffering the knockout.
I'll assume it's true, it might be mental, Khan has no swagger left but physically he isn't ruined. By the way Sergio is 38 and hadn't had a fight in 7 and a half months he might be old.
