Not sure about this whole coming out of retirement for Ricky but I wish him well. He's a really funny guy who exceeded all expectations. He was a very good champion and statistically the most dominant champion at 140 in the history of the division.
Katsidis is completely shot and is no welterweight Senchenko although not elite is a more than decent opponent for a comeback.
If Hatton can get to 80% of what he used to be he will bash Senchenko up pretty easily, despite the extra height and reach advantages he has.