Conor McGregor wants to leave no doubt in his upcoming trilogy fight with fellow lightweight contender Dustin Poirier.

McGregor tweeted over the weekend after the fight was finalized on Friday, saying he plans to “Adjust and absolutely f***ing destroy” Poirier in the third bout.

It was Poirier who totally dismantled Conor McGregor in the second bout, which occurred at UFC 257 in January.

Poirier came out with a heavy mix of calf kicks and head strikes in the first round. The calf kicks in particular really appeared to hinder McGregor's mobility. He struggled to move with his usual fluidity, and Poirier capitalized.

“The Diamond” began teeing off on McGregor, hurting him with a left cross over the top of his head before putting together a combination of left hands. McGregor began to retreat before Poirier landed a clean, short right hook that put the “Notorious One” out.

It was sweet vindication for Poirier, who lost the first fight between the two back in 2014. But it represented another step back for the Irish star.

McGregor became a two-weight world champion at UFC 205 in the fall of 2016 and ascended to the peak of the combat sports world by facing the undefeated Floyd Mayweather in an exhibition boxing match the following summer.

However, McGregor's recent UFC track record is fairly lackluster. He was submitted by then-UFC lightweight champion Khabib Nurmagomedov at UFC 229. Conor McGregor looked to get his 2020 off to a flying start with a KO win over company veteran Donald Cerrone at UFC 246, but the coronavirus pandemic disrupted his fighting plans.

The 32-year-old finally returned to the octagon against Poirier, though he would suffer his second defeat in three fights. None of that speaks to the numerous incidents McGregor has been involved in away from the sport.

Can Conor McGregor get the final word over Poirier this summer? Time will tell, though he certainly seemed hungry for the trilogy even before it was finalized.