Casamayor was definitely not shot, faded yes but not shot. Katsidis had that in the bag but got reckless
. After that, Casa did alright against JMM before being stopped so not shot at all.
Against Diaz, I'd blame Katsidis' trainers. He had a shit gameplan and gave Kats shit advice in the corner. Tried to box too much instead of keeping to his strengths and being aggressive.
He is world class. Otherwise he'd be getting blown out by these fighters instead of losing whilst still being competitive.