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Conor McGregor won the first he fought Dustin Porier, so it should come as no surprise that he’s favored to win again.

On Monday, the UFC made the rematch official as Poirier vs. McGregor 2 is set to headline UFC 257 on Jan. 23. The announcement came after McGregor signed his bout agreement last week; Poirier had already signed his one week earlier.

McGregor and Poirier first fought as featherweights in Septemeber 2014 at UFC 178, with McGregor winning by first-round TKO. Their UFC 257 rematch is set to be contested at lightweight.

McGregor, a former UFC featherweight and lightweight champion, is a -228 favorite, according to the oddsmakers at BetMGM, with Poirier coming back at +185. At these odds, a bet of $228 on McGregor would be needed to profit $100. Meanwhile, a $100 bet on Poirier would yield a $185 profit.

By the time he steps into the octagon, McGregor (22-4 MMA, 10-2 UFC) will have been off for 371 days. He last fought at UFC 246, defeating Donald Cerrone in a welterweight fight by 40-second TKO. Poirier’s last fight was June 27, when he defeated Dan Hooker by grueling unanimous decision in a “Fight of the Year” candidate.

Since their first meeting at UFC 178, Poirier Poirier (26-6 MMA, 18-5 UFC) has made 13 UFC appearances to McGregor’s eight. The lack of activity on McGregor’s part comes into clearer view in recent years, with Poirier making eight octagon appearances since 2017 while McGregor’s only fought three times, which includes a boxing match against Floyd Mayweather.

Poirier’s evolution through the years led to an eventual interim 155-pound championship win over Max Holloway in April 2019.

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