The following is the live blog of the third round of the main event for UFC 137. The fight was even according to our scoring heading into the third round.
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ROUND 3 - Penn lands a hard shot to the boy. Penn attempts a single, but can't get it. And we're back to round two with Diaz pounding on Penn against the fence. Penn circles out. Constant punches from Diaz either land as jabs or hook to Penn's body/face. Penn managing to keep this fight in the center of the cage. Penn's hanging on but can't do much. Diaz pressing again into the fence and throwing punch after punch. Penn firing back, though. Diaz almost chasing Penn now, but Penn strong in the pocket returning fire.
MMA Nation scores this bout 10-9 Diaz and the fight 29-28 Diaz.
UFC 137 results: Nick Diaz defeats B.J. Penn by unanimous decision (29-28, 29-27, 29-28)