LAS VEGAS – Sean O'Malley and Merab Dvalishvili handled their most important piece of pre-fight business Friday when they made weight for the UFC 306 main event.

Bantamweight champion O'Malley (18-1 MMA, 10-1 UFC) will attempt to make his second title defense when he takes on Dvalishvili (17-4 MMA, 10-2 UFC) in the top-billed act of Noche UFC at Sphere (ESPN+ pay-per-view, ESPNews, ESPN+).

It was a professional scene during official weigh-ins at the UFC Apex, with O'Malley registering at 135 pounds on the scale. He was the first to arrive, as well. Challenger Dvalishvili came to the scale about 15 minutes into the session and was a pound under at 134.

Check out the video above to see O'Malley and Dvalishvili make weight for the UFC 306 headliner.

For more on the card, visit MMA Junkie's event hub for UFC 306.

This article originally appeared on MMA Junkie: UFC 306 video: Sean O'Malley, Merab Dvalishvili make weight for historic Sphere headliner