The UFC 178 weigh-ins kick off today at 4 p.m. PT, live from the MGM Grand in Las Vegas.

The event will be headlined by Demetrious Johnson and Chris Cariaso, who will be fighting for Johnson’s flyweight title. The co-main event for the bout will be between Donald Cerrone and Eddie Alvarez, where Alvarez will look to make his successful UFC debut. Also on the card will be Conor McGregor vs. Dustin Poirier, as well as the return of Cat Zingano.

Serving as the preliminary card main event will be Dominick Cruz’s return to the UFC after nearly a 3-year long layoff. He will take on Takeya Mizugaki in a pivotal bantamweight matchup.