UFC 166 'Primetime' LIVE discussion thread for 'Velasquez vs. Dos Santos 3' on FOX Sports 1 (Episode 1)

Ultimate Fighting Championship (UFC) is back with its gritty documentary-style series for the upcoming UFC 166: "Velasquez vs. Dos Santos 3" championship main event, which is scheduled to take place at the Toyota Center in Houston, Texas, on Oct. 19, 2013.

The promotion will air part one of its three-part "Primetime" series TONIGHT (Oct. 2) at 8:30 p.m. ET on FOX Sports 1, taking an in-depth look at the 265-pound pay-per-view (PPV) rubber match between reigning division kingpin Cain Velasquez, and hard-hitting ex-titleholder Junior dos Santos.

Here's a sneak peek of tonight's episode:

Episodes two and three air Oct. 9 and Oct. 16, respectively.

Velasquez (12-1) has just one defeat throughout his professional mixed martial arts (MMA) career, a first round knockout loss to Dos Santos during the promotion's inaugural FOX show in late 2011. He quickly rebounded by smashing Antonio Silva at UFC 146 just a few months later, then went on to avenge his loss to the Brazilian via lopsided unanimous decision last December.

Not bad for a guy who "hits like a girl."

Dos Santos (16-2) became the reigning punchface champion after five rounds of punishment at UFC 155 (pic), falling to Velasquez in what was his first defeat inside the Octagon and just the second of his career. "Cigano" didn't look any worse for the wear in his next fight, however, and airmailed Mark Hunt back to New Zealand with a highlight-reel head kick knockout at UFC 160 (watch it).

No one left to fight except each other.

So how do Velasquez and dos Santos stack up this time around? Check out their other staredown moments at UFC on FOX 1 and UFC 155 here and here. And for more on UFC 166: "Velasquez vs. Dos Santos 3" be sure to check out our comprehensive event archive right here.