Wladimir Klitschko, his most impressive performance?

Peter. He was physically challenged and gutted it out, which was something he needed to do at the time.

Both Byrd fights were impressive, as was the Mercer fight.

 

Sam Peter

Klitschko couldnt fight in his comfort zone and had to dig deep. He was in with a unbeaten, confident brawler who he couldnt hurt.

The 2nd Brewster fight is also a good win. Afterwards people said Brewster was injured, he was out a long time. But history proves that als this doesnt mean anything. Brewster very well could have been in very good shape.

Off course, his wins against Byrd were good, but stylewise it was a walk in the park.