Rory MacDonald knew he was in for a serious fight the moment he etched his name on a contract opposite former welterweight champion B.J. Penn. But it wasn’t just because the two fighters would meet in the Octagon on Dec. 8 as part of the UFC on Fox 5 card. It also had to do with Penn’s approach leading into certain fights where psychological warfare is as dangerous as any jab he throws at an opponent.
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