Ultimate Fighting Championship (UFC) held its official weigh in event for UFC on Fox 4: "Shogun vs. Vera" earlier this evening (Fri., Aug. 3, 2012) from inside the Staples Center in Los Angeles, California.

In case you missed it, full UFC on Fox 4 weigh in results and video can be found right here.

Former Light Heavyweight Champion Mauricio Rua will look to impress his bosses with a devastating stoppage -- or at least a big victory -- over Brandon Vera in the main event of the evening. If he does so, he'll earn a title shot against the winner of Jon Jones vs. Dan Henderson next month.

The same opportunity is being afforded to Lyoto Machida and Ryan Bader, who square off in the co-main event. Assuming one of the two wins huge, it's possible they move to the front of the line.

It's (almost) go time. And it's free!

Get a closer look at the Machida vs. Bader staredown in advance of Saturday night's showdown in the "City of Angles" after the jump.

Photo: Esther Lin/MMA Fighting