Ultimate Fighting Championship (UFC) returns with its "Primetime" preview for UFC 143: "Diaz vs. Condit," a three-part series featuring a behind-the-scenes look as former Strikeforce welterweight champion Nick Diaz prepares to fight fellow division number one contender Carlos Condit for the Interim title on Feb. 4, 2012, at the Mandalay Bay Events Center in Las Vegas, Nevada.

Episode one premieres TONIGHT (Fri., Jan. 20) at 11 p.m. ET on the FX Channel. Episodes two and three of "UFC Primetime" air Jan. 27 and Feb. 3, respectively.

"Diaz vs. Condit" was booked after UFC welterweight champion George St. Pierre suffered a devastating knee injury, one that was severe enough to require surgery and several months of rehab.

His ACL tear marked the second time St. Pierre has been forced to withdraw from a headlining title defense against Diaz, which will no doubt do little to convince the fiery Stockton slugger that he ain't "scared."

"Rush" pulled out of their UFC 137 main event back in October after spraining his medial collateral ligament (MCL). It was not torn and St. Pierre was quickly re-booked to face Diaz, who bumped Carlos Condit from the number one contender spot after retiring B.J. Penn back on Oct. 29.

Now both Condit and Diaz get the opportunity they've wanted since day one: To fight for the UFC welterweight title. In fact, PPV buys notwithstanding, this 170-pound war could meet and perhaps even exceed the fireworks expected in the original billing.

Time will tell.

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