Ultimate Fighting Championship (UFC) is just over 24 hours away from its upcoming UFC Vegas 117 mixed martial arts (MMA) event, headlined by a 145-pound showdown between featherweight contenders Arnold Allen and Melquizael Costa. The action gets underway this Sat. night (May 16, 2026) on Paramount+ from inside the promotion’s Meta Apex facility in Las Vegas, Nevada, and also features a 145-pound co-headliner between featherweight title hopefuls DooHo Choi and Daniel Santos.
Before the Paramount+ live
stream gets underway this weekend in “Sin City,” which includes the bantamweight tilt pitting Malcolm Wellmaker against Juan Diaz, all 26 fighters must hit the scale to prove themselves worthy. Note: Nevada State Athletic Commission (NSAC) affords a one-pound allowance in non-title fights.
The UFC Vegas 117 weigh ins will stream LIVE in the embedded video player above beginning promptly at 12 p.m. ET (9 a.m. PT). We’ll also have real-time text updates for the “Allen vs. Costa” weigh ins listed below, updated as they happen. Remember too that staredowns will commence at the conclusion of today’s weigh ins (roughly 2 p.m. ET).
Complete UFC Vegas 117 weigh ins text results below:
UFC Vegas 117 Main Card on Paramount+:
145 lbs.: Arnold Allen () vs. Melquizael Costa ()
145 lbs.: DooHo Choi () vs. Daniel Santos ()
135 lbs.: Malcolm Wellmaker () vs. Juan Diaz ()
205 lbs.: Modestas Bukauskas () vs. Christian Edwards ()
135 lbs.: Timmy Cuamba () vs. Bernardo Sopaj ()
UFC Vegas 117 Prelims Card on Paramount+:
170 lbs.: Nikolay Veretennikov () vs. Khaos Williams ()
205 lbs.: Ivan Erslan () vs. Tuco Tokkos ()
155 lbs.: Thomas Gantt () vs. Artur Minev ()
135 lbs.: Ketlen Vieira () vs. Jacqueline Cavalcanti ()
185 lbs.: Cody Brundage () vs. Andre Petroski ()
115 lbs.: Alice Ardelean () vs. Polyana Viana ()
125 lbs.: Daniel Barez () vs. Luis Gurule ()
115 lbs.: Shauna Bannon () vs. Nicolle Caliari ()
For more UFC Vegas 117 news and notes click here.
