Ranking All 7 Irish Fighters in the UFC Right Now | News, Scores, Highlights, Stats, and Rumors

Not to take anything away from Duffy's toughness, his terrific record to date, his solid boxing pedigree or anything else, but come on. That 2010 win over McGregor has got to look like a winning lottery ticket these days.

It has to be a factor in why the UFC picked him up and is fast-tracking him to the top. Though McGregor is currently competing at 145 pounds, he has spoken repeatedly about a desire to fight at lightweight, where he held a belt in Europe's well-regarded Cage Warriors promotion. 

In the meantime, Duffy gets a chance to shine in front of a reasonably large audience when he takes on a very dangerous Dustin Poirier in Saturday's main event. 

It airs on the UFC Fight Pass subscription streaming service in the U.S., but still. Good stuff.