The tension is palpable as UFC Vegas 117 gets underway with the official weigh-ins, setting the stage for an action-packed Saturday at the Meta Apex in Las Vegas. All 26 fighters stepped onto the scale Friday, and you can catch the full weigh-in stream above, courtesy of Ag. Fight.

In the highly anticipated main event, featherweight contenders Arnold Allen and Melquizael Costa face off in a non-title bout that could shake up the division. Both fighters must tip the scales at no more than 146 pounds, and with rankings on the line, every ounce counts. Allen, currently sitting at No. 8 in the MMA Fighting Global Rankings, looks to hold his ground against the surging Costa, who's climbed to No. 13 and brings serious momentum into the Octagon.

The co-main event promises fireworks of its own, as Doo Ho Choi and Daniel Santos collide in another featherweight non-title showdown. Both fighters also need to hit the 146-pound limit, setting the stage for a night of high-stakes action that has fans buzzing.

Whether you're gearing up for fight night or just getting started in MMA, this card delivers the kind of drama that keeps us coming back for more. Stay tuned—the weigh-ins are just the beginning.