The pay-per-view event, which features a welterweight headliner between former UFC champ B.J. Penn and ex-Strikeforce titleholder Nick Diaz, takes place at Las Vegas' Mandalay Bay Events Center.
Official results beginning at approximately 5:45 p.m. ET (2:45 p.m. PT local time) for the preliminary card and 9 p.m. ET for the main card.
In addition to the night's main card – which also features heavyweight bouts of Matt Mitrione vs. Cheick Kongo and Roy Nelson vs. Mirko "Cro Cop" Filipovic – UFC 137 features a two-bout "UFC Prelims" special on Spike TV and an additional four fights that stream on Facebook.PRELIMINARY CARD: (Facebook @ 6pm est.)Middleweight bout:
Dustin Jacoby vs. Clifford Starks - Clifford Starks via Unanimous Decision (30-27, 30-27, 30-27)Middleweight bout:
Chris Camozzi vs. Francis Carmont - Francis Carmont via unanimous decision (30–26, 30–27, 30–27)Lightweight bout:
Ramsey Nijem vs. Danny Downes - Ramsey Nijem via unanimous decision (30–25, 30–26, 30–27)Light Heavyweight bout:
Brandon Vera vs. Eliot Marshall - Brandon Vera via unanimous decision (29–28, 29–28, 29–28)PRELIMINARY CARD: (Spike TV @ 8pm est.)Catchweight (148lb) bout:
Tyson Griffin vs. Bart Palaszewski - Bart Palaszewski via KO (punches) at 2:45 of round 1Lightweight bout:
Dennis Siver vs. Donald Cerrone - Donald Cerrone via submission (rear naked choke) at 2:22 of round 1MAIN CARD:Featherweight bout:
Hatsu Hioki vs. George Roop - Hatsu Hioki via split decision (29–28, 28–29, 29–28)Bantamweight bout:
Scott Jorgensen vs. Jeff Curran - Scott Jorgensen via unanimous decision (29–28, 29–28, 30–27)Heavyweight bout:
Mirko Filipovic vs. Roy Nelson - Roy Nelson via TKO (punches) at 1:30 of round 3CO - MAIN EVENT:Heavyweight bout:
Cheick Kongo vs. Matt Mitrione - Cheick Kongo via unanimous decision (30–27, 29–27, 29–28)MAIN EVENT:Welterweight bout:
B.J. Penn vs. Nick Diaz - Nick Diaz via unanimous decision (29-28, 29-27, 29-28)