Rory fight, though that could have been more confusion than fatigue. He lost a lot of momentum when Rory stood up from an early takedown, and he didn't know how to circle off the cage.
Against Mini-Cain he certainly got tired, but he outlasted him with a broken foot.
Against Marquardt he didn't even gas in the "bad cardio" sense, he nearly knocked him out the round earlier and punched himself out - plus he was losing and getting punched in the face for the first two rounds.
Against Jake Shields I don't know if he gassed because neither guy did anything in that fight and I refuse to rewatch it. He probably did though.