Casamayor, Is too old now.

Where as a prime Casamayor would have been licking his lips to see Katsidis coming in the past, Katsidis has the style required to beat the Csa of today.
The fitness, the relentlessness, the single minded aggression will be enough to do it as Casa no longer has the tools to penalise his aggression, capatilise on his recklessness and exploit his questionable defence.