Conor McGregor's act was once entertaining. Now it's just sad and pathetic. After another loss to Dustin Poirier at UFC 264, it's getting harder to remember when McGregor was on top of the MMA world for winning in the Octagon as much as for his trash-talking and larger-than-life personality. The sight of McGregor sitting on the mat with a broken leg after the loss and still talking about Poirier’s...