Above, video highlghts from yesterday's UFC on FOX open workouts, featuring reigning heavyweight champion Cain Velasquez and division number one contender Junior dos Santos.

The pair will do battle as the featured fight on the promotion's network television debut, UFC on FOX 1, which emanates from the Honda Center in Anaheim, California, at 9 p.m. ET on November 12, 2011.

A closer look at the preparations of both the challenger and the champion, after the jump.

The Challenger...

The champion...

Remember: MMAmania.com will provide LIVE updates with blow-by-blow, round-by-round commentary of all the action on fight night, which is slated to air at 9 p.m. ET on FOX (with Facebook "Prelim" fights beginning at 5:00 p.m. ET).

Now that you've seen them both a day out from the fight, are you still comfortable with your original pick? Or have you started to waver in either direction?

For a preview of tomorrow night's UFC heavyweight title fight click here.