The UFC has officially began the rollout for UFC 257 and the return of Conor McGregor. The MMA banner shared the trailer for the January 23rd event in which Dustin Poirier will aim to avenge his 2014 loss to a then ascending star in Conor McGregor.

The lightweight face-off holds lots of implications for the dynamic lightweight division considering the recent retirement of the pound-for-pound king of the weight class in Khabib Nurmagomedov. With the likes of Justin Gaethje, Rafael Dos Anjos, and Charles Oliveria's win over El Cucuy Tony Ferguson, this run-back could really shake up the division.

The first time the two met it took all of two minutes for McGregor to dispose of Poirier. However, in the years since their scrap, The Diamond has tallied important wins over divisional mainstays including Gaethje, Eddie Alvarez, Anthony Pettis, Dan Hooker, and a huge victory over UFC star Max Holloway.

Poirier will look to avenge his loss and continue his climb in the division while Conor will look to assert that their first tango was no fluke. As one of combat sports' most bankable names, McGregor's return makes UFC 257 a hell of a way to begin the calendar of events.

Watch the trailer below.

Additional bouts scheduled for UFC 257

Women's Flyweight bout: Jessica Eye vs. Joanne Calderwood

Middleweight bout: Brad Tavares vs. Antônio Carlos Júnior

Middleweight bout: Andrew Sanchez vs. Andre Muniz

Lightweight bout: Nasrat Haqparast vs. Arman Tsarukyan

Lightweight bout: Ottman Azaitar vs. Matt Frevola

Bantamweight bout: Umar Nurmagomedov vs. Sergey Morozov

Featherweight bout: Shane Burgos vs. Hakeem Dawodu

Flyweight bout: Amir Albazi vs. Zhalgas Zhumagulov

Women's Strawweight bout: Amanda Ribas vs. Marina Rodriguez

Light heavyweight bout: Khalil Rountree vs. Marcin Prachnio