Might've had an injury coming in with how the line movement was.
Or just being a different phase of his career now given his age and layoff
Age,layoff, and pretending to care if he lost or not. He was gassed after a round and a half. Now he can just retire from the UFC, and fight 1-2 more times, in Bellator most likely, and earn more than he did his entire MMA career before.