UFC on FOX Video: Cain Velasquez and Junior Dos Santos Face Off at Weigh-Ins

The UFC's debut on FOX is only a day away and heavyweights Cain Velasquez and Junior dos Santos are prepared to put on one of the most exciting and significant fights of the year.

The heavyweight title fight will be broadcast as the lone bout on the FOX card, but there is an undercard that is set to feature another anticipated fight between lightweight contenders Ben Henderson and Clay Guida. The winner will emerge as the No. 1 contender for Frankie Edgar's title.

All undercard fights will be shown on Facebook and Fox.com, starting at 4:45 p.m. ET. The heavyweight title fight will start at 9 p.m. ET (6 p.m. PT) with a pre-fight show beginning at 8 p.m. ET on FOX.

Official Weigh-In Results:

Main Card (FOX)

Champ Cain Velasquez (249) vs. Junior Dos Santos (239)

Preliminary Card (Facebook and FOX.com)

Clay Guida (156) vs. Ben Henderson  (156)

Pablo Garza (145) vs. Dustin Poirier (146)

Ricardo Lamas (145) vs. Cub Swanson  (145)

Clay Harvison (169) vs. DaMarques Johnson  (171)

Norifumi "Kid" Yamamoto (135) vs. Darren Uyenoyama  (135)

Robert Peralta (145) vs. Mackens Semerzier (146)

Alex Caceres (136) vs. Cole Escovedo  (134)

Paul Bradley (171) vs. Mike Pierce (171)

Matt Lucas (203) vs. Aaron Rosa (204)