Catch the Live Weigh-In for UFC Vegas 101 Now!

The UFC Vegas 101 weigh-in video showcases 28 fighters stepping on the scale Friday morning in Las Vegas. You can watch a live stream of the official weigh-ins above, courtesy of Ag. Fight.

In the main event, Amanda Ribas seeks to extend her winning record against perennial contender Mackenzie Dern, as both fighters aim to make the strawweight limit of 116 pounds for their non-title bout. Ribas previously defeated Dern by unanimous decision in their first encounter in October 2019 and is looking to bounce back after a decision loss to Rose Namajunas in the flyweight main event at UFC Vegas 89 this past March.

Mackenzie Dern recently ended a two-fight losing streak, achieving a decision victory over Loopy Godinez at UFC Abu Dhabi last October.

You can also check out the highlights of the main event weigh-ins below.

"Mackenzie makes the main event OFFICIAL. @MackenzieDern weighs in at 116 lbs! #UFCVegas101 | LIVE tomorrow 7pmET on @ESPNPlus!"— UFC (@ufc) January 10, 2025.

"One half of the main event tomorrow! @AmandaRibasUFC makes 116 lbs for #UFCVegas101! LIVE tomorrow on @ESPNPlus | 7pmET!"— UFC (@ufc) January 10, 2025.

Santiago Ponzinibbio and Carlston Harris are required to make the welterweight limit of 171 pounds for the co-main event on the card.

The official weigh-ins are anticipated to commence on Friday at 12 p.m. ET / 9 a.m. PT.

Be sure to check out the UFC Vegas 101 weigh-in results below.

Main Card (ESPN+ at 7 p.m. ET)

Mackenzie Dern (116) vs. Amanda Ribas (116)

Santiago Ponzinibbio (171) vs. Carlston Harris (170)

Abdul Razak Alhassan (185.5) vs. Cesar Almeida (185.5)

Chris Curtis (185.5) vs. Roman Kopylov (185.5)

Christian Rodriguez (145) vs. Austin Bashi (145.5)

Uros Medic (171) vs. Punahele Soriano (171)

Preliminary Card (ESPN+ at 4 p.m. ET)

Jose Johnson (128.5)* vs. Felipe Bunes (126)