Ultimate Fighting Championship (UFC) returns with its "Primetime" preview show for UFC 145: "Jones vs. Evans," featuring a behind-the-scenes look as current Light Heavyweight Champion Jon Jones prepares to defend his strap against former division kingpin Rashad Evans on April 21, 2012 at the Philips Arena in Atlanta, Georgia.

Part one premiers TONIGHT (Fri., April 6, 2012) at 11 p.m. ET on the FX Channel and talk, complain, whine, boast -- whatever it is you do -- about the program in the comments section below.

Parts two and three air April 13 and April 20, respectively.

"Bones" is currently hovering around the -500 mark on most of the major betting sites, compared to the +400 underdog line for "Suga," his former friend and training partner under Greg Jackson in Albuquerque, New Mexico. UFC 145 will mark the culmination of their feud, which began back in 2010 prior to the UFC 128 pay-per-view (PPV) event.

A video preview of their "Primetime" rivalry after the jump.

For more on UFC 145: "Jones vs. Evans" be sure to hit up our event archive right here. See the current fight card and rumors here.