Round 4 = Katsidis starts out jabbing and lands two solid jabs Katsidis goes back to moving his head and trying to box on the outside nice combos from Katsidis Diaz with a double left hook to the body hard left hook to the body from Katsidis woah Katsidis went for a homerun with an uppercut but missed solid uppercut from Diaz and Diaz outworks Katsidis on the inside with his faster hands wow Diaz letting his hands go about 20 punches one after another there Diaz is outworking and outboxing Katsidis totally at the moment solid jab from Katsidis rocks Diaz's head back uppercut from Katsidis on the inside both men throw punches at the bell.

Diaz's round 3-1 to Diaz