Khan-Maidana round 10 For me, great rounds are rounds full of drama and excitement, not just two guys hitting each other with punches. Nobody was hurt in the sixth round of Segura-Calderon, same with the Cazares fight. Marquez-Katsidis round 3 was good, but I thought the Khan-Maidana tenth round was better.
Probably Khan-Maidana round 10 (with honourable mentions going to Marquez-Katsidis round 3 and Froch-Kessler round 12) How the **** Khan managed to stay on his feet after that beating still amazes me. He really was determined not to go down.