Two of the world's top middleweight fighters will collide when Vitor Belfort takes on Michael Bisping in the five-round headliner for UFC on FX 7: "Belfort vs. Bisping" from the Ginasio Estadual Geraldo Jose de Almeida in Sao Paulo, Brazil, on Jan. 19, 2013.

See the video of their staredown scuffle here.

Belfort (21-10) recently took a break from his middleweight duties to accept a short notice fight against reigning UFC Light Heavyweight Champion Jon Jones at UFC 152. Despite some early drama, in which the Brazilian locked on a ligament-straining armbar, the former division titleholder couldn't seal the deal and eventually tapped to a fourth-round Kimura.

The ensuing loss sent him back to 185 pounds, where he's currently riding a two-fight win streak.

That's one more than Bisping, who rebounded from a close decision loss to Chael Sonnen last year to out-point Brian Stann at the "Jones vs. Belfort" event in Toronto. "The Count" has been knocking on the championship door his entire career and a win over Vitor might finally be the reason it opens.

Or slams shut for good in defeat.

MMAmania.com will provide LIVE round-by-round, blow-by-blow coverage of the UFC on FX 7 main card action below, which is slated to start promptly at 9 p.m. ET. Up-to-the-minute updates will begin to flow earlier than that around 5:30 p.m. ET with the "Prelims" bouts on Facebook and FUEL TV.

For more on the upcoming UFC on FX 7: "Belfort vs. Bisping" fight card be sure to check out our comprehensive news archive right here.