UFC Vegas 101 will mark the beginning of the promotion's 2025 fight calendar, scheduled for this Saturday, Jan. 11, at the UFC Apex in Las Vegas, Nevada. The Fight Night event will feature a rematch between Mackenzie Dern and Amanda Ribas in the main event. View this post on Instagram Instagram PostThe fight was initially slated for UFC Tampa in December 2024 but was removed from that card and rescheduled for this weekend's event. Dern and Ribas first clashed at a Fight Night event in October 2019, where Ribas claimed a unanimous decision victory, marking the first defeat of Dern's professional career.In the co-main event of UFC Vegas 101, Santiago Ponzinibbio will face Carlston Harris in a welterweight clash. Elsewhere on the card, Chris Curtis will take on Roman Kopylov in a middleweight showdown.UFC Vegas 101: Mackenzie Dern vs. Amanda Ribas 2 full fight cardMain CardMackenzie Dern vs. Amanda Ribas: strawweightSantiago Ponzinibbio vs. Carlston Harris: welterweightCesar Almeida vs. Abdul Razak Alhassan: middleweightChris Curtis vs. Roman Kopylov: middleweightChristian Rodriguez vs. Austin Bashi: featherweightPunahele Soriano vs. Uroš Medić: welterweightPreliminary cardJose Johnson vs. Felipe Bunes: flyweightMarco Tulio vs. Ihor Potieria: middleweightThiago Moises vs. Trey Ogden: lightweightPreston Parsons vs. Jacobe Smith: welterweightErnesta Kareckaite vs. Nicolle Caliari: women's flyweightMagomed Gadzhiyasulov vs. Bruno Lopes: light heavyweightFatima Kline vs. Victoria Dudakova: strawweightJoe Solecki vs. Nurullo Aliev: lightweightWhat time does UFC Vegas 101: Mackenzie Dern vs. Amanda Ribas 2 start?The preliminary card is set to kick off at 4 p.m. ET/1 p.m. PT on Saturday, Jan. 11, in the United States. Meanwhile, fans in the United Kingdom can tune in on the same day, with the action starting at 10:00 p.m. BST or 9:00 p.m. GMT.The main card of UFC Vegas 101 is scheduled to begin at 7 p.m. ET/4 p.m. PT in the United States. For fans in the United Kingdom, this translates to a 1 a.m. BST or 12 a.m. GMT start time on Sunday, Jan. 12.How to watch UFC Vegas 101: Mackenzie Dern vs. Amanda Ribas 2?The upcoming event will be available for live streaming on ESPN and ESPN+ for current subscribers. New users can gain access by subscribing to ESPN+, which is offered at $10.99 per month or $109.99 annually for an annual plan.Alternatively, fans can access ESPN+ through the Disney Bundle, which combines subscriptions to Hulu, Disney+, and ESPN+ into one convenient package. This bundle is available starting at $14.99 per month.