UFC Vegas 81 Fight Night event is scheduled for Saturday night (October 14th) at the Apex Facility in Las Vegas, Nevada.Sodiq Yusuff and Edson Barboza will headline the event in a featherweight matchup. During the official weigh-ins on Friday, Yusuff registered a weight of 145.5 pounds, while Barboza weighed in at 146 pounds. View this post on Instagram Instagram PostAdditionally, Jennifer Maia and Viviane Araujo will be in the co-main event of UFC Vegas 81, competing in a women's flyweight bout. Maia weighed in at 125 pounds, while Araujo weighed 126 pounds. View this post on Instagram Instagram PostAccording to a recent UFC press release, the scheduled catchweight rematch between Edgar Chairez and Daniel Lacerda was called off after the weigh-ins, owing to an undisclosed medical concern unrelated to weight on Lacerda's part.Chairez vs. Daniel Lacerda canceled from UFC Vegas 81; Credits: @UFCNews on XThe pair had previously clashed at the Noche UFC event in September. However, their flyweight bout was declared a no contest due to a referee error. In the first round, referee Chris Tognoni mistakenly believed that Lacerda had been choked unconscious by Chairez's standing guillotine and stopped the fight prematurely.The 27-year-old Brazilian immediately contested the decision, and upon reviewing video footage, the officials at ringside determined that Tognoni had made a mistake, leading to the fight being officially declared a no contest.Complete results for UFC Vegas 81: Yusuff vs. Barboza weigh-inMain CardSodiq Yusuff (145.5 lbs) vs. Edson Barboza (146 lbs): featherweight boutJennifer Maia (125 lbs) vs. Viviane Araujo (126 lbs): Women's flyweight boutJonathan Martinez (136 lbs) vs. Adrian Yanez (135.5 lbs): bantamweight boutAndre Petroski (186 lbs) vs. Michel Pereira (186 lbs): middleweight boutEdgar Chairez (129.5 lbs) vs. Daniel Lacerda (130 lbs): 130 lbs catchweight bout*Christian Rodriguez (140 lbs)** vs. Cameron Saaiman (135.5 lbs): bantamweight boutPreliminary CardDarren Elkins (146 lbs) vs. TJ Brown (146 lbs): featherweight boutTainara Lisboa (133.5 lbs) vs. Ravena Oliveira (133 lbs): Women's bantamweight boutTerrance McKinney (155.5 lbs) vs. Brendon Marotte (155.5 lbs): lightweight boutIrina Alekseeva (135 lbs) vs. Melissa Dixon (135.5 lbs): Women's bantamweight boutChris Gutierrez (136 lbs) vs. Alatengheili (136 lbs): bantamweight boutAshley Yoder (115.5 lbs) vs. Emily Ducote (115.5 lbs): strawweight bout*Fight canceled.**Rodriguez weighed four pounds more over the bantamweight limit.