previous to this fight the 'majority' of people remembered casa by his extremely poor showing against santa cruz, now its his sensational turn-around knockout of katsidis and the fact he is lightweight champ.
What this means for katsidis? sure it puts a dent in his sails, the dejection he showed at the end of the fight was ball-breaking but the guy knows whats to be done evident by his absolute humility at the end of the fight. Go away from this with a massive lesson in tow and come back to win the next big fight which will have no problem happening now his presence is well and truly there in the states.