For Topuria, Pimblett makes the most sense for his first title defense. He dismissed Gaethje (26-5 MMA, 9-5 UFC) as a potential next opponent – despite Gaethje threatening to retire if he doesn't get his shot.

Following UFC 317, Topuria is the second-youngest fighter in UFC history to achieve titles in two divisions. Coming in at number one is McGregor, who was 28 when he knocked out Eddie Alvarez for the lightweight title. Topuria is also 28, but roughly a month younger than 'The Notorious.'

The moment came courtesy of a first-round knockout of Oliveira (35-11 MMA, 23-11 UFC) in the headliner at T-Mobile Arena in Las Vegas. Check below for the top X (formerly Twitter) reactions to Topuria beating Oliveira at UFC 317 to become the new 155-pound champion.