Filed under: News , UFC , Videos Check out the full “UFC Road to the Octagon” segment for Saturday’s UFC on FOX 23 event. UFC on FOX 23 takes place Saturday at Denver’s Pepsi Center. It airs on FS1 following early prelims on UFC Fight Pass. In the headliner, Julianna Pena (8-2 MMA, 4-0 UFC), who’s No. 2 in the USA TODAY Sports/MMAjunkie MMA women’s bantamweight rankings , takes on No