I hope I'm wrong about this as I enjoy the excitement McGregor brings to the UFC. It seems like McGregor is seriously going to fluctuate from the 145-170 lb divisions. However, if there's anything I've learned from watching Roy Jones Jr go up to heavyweight to fight Ruiz then coming back to get KO'd by Tarver in his own division is that sometimes going up and down in weight can really catch up to you. RJJ discussed how it was a huge mistake for him to go up in weight then come down, that he lost that speed and stamina he once had. I know boxing is a bit different but Conor is going from 145 lbs to 170. Im confident he beats Diaz but it seems his new plan is to consistently fluctuate from 145-170 for a while and that might be something that catches up with him quicker than people realize.