Justin Gaethje chose Dustin Poirier's knockout of Conor McGregor at UFC 257 as his KO of the year.'The Diamond' won at Fight Island on January 24, 2021 after using a combination of punches to briefly silence the brash McGregor. Poirier leveled the score 1-1 with 'Notorious', who beat him in a 2014 featherweight contest.During a chat with the UFC 269 weigh-in panel on Friday, Gaethje was asked to choose the best knockout win of the year. Here is the current No. 2-ranked lightweight contender's reply:"I am going with Poirier vs. McGregor [2] because I can't tend to be petty and he [Conor] said he did not go to sleep [at UFC 257]. So let us watch it closer... That was a beautiful night. Yeah, he went to sleep. Night, night! Honestly, I like the one in which he broke his leg [at UFC 264] better. But here we go," said Gaethje.Watch Justin Gaethje in conversation with Laura Sanko, Dan Hellie and Daniel Cormier below:Dustin Poirier also beat Conor McGregor in their trilogy fight at UFC 264 via TKO after a referee stoppage at the end of the first round. 'Mystic Mac' suffered a broken leg and is still out of action.Dustin Poirier will headline UFC 269 this weekend in a lightweight championship showdown with Charles OliveiraPoirier finally gets another shot at the UFC lightweight championship this Saturday. He will square off against titleholder Charles Oliveira in Las Vegas, Nevada.The No.5-ranked UFC men's pound-for-pound fighter last fought for the 155-pound title at UFC 242 in September 2019. He lost as interim champ to Khabib Nurmagomedov via submission in the third round of their unification clash.SportsCenter@SportsCenterThe #UFC269 lightweight title main event is official 🏆 @espnmma11:13 AM · Dec 10, 20215662436The #UFC269 lightweight title main event is official 🏆 @espnmma https://t.co/9lMghDbtxHDustin Poirier holds a 28-6-1 record in his professional mixed martial arts career, while Oliveira is 31-8-1. The duo have contested a cumulative 54 bouts inside the octagon. This will be their first encounter against each other.