Moving up from 145 to 170 proved to be too much for McGregor. Diaz submitted him in the 2nd round. Diaz is hardly in the top tier of the 170 lb weight class either. Can you imagine what Robbie Lawler would do to him? McGregor is truely dangerous at 145. That is where he belongs as long as he can make the weight cut, which is becoming increasingly more difficult for him.

