Tickets for UFC 137: "St. Pierre vs. Diaz," which was recently made official for the Mandalay Bay Events Center in Las Vegas, Nevada, on Sat., Oct. 29, 2011, will go on sale to the general public on Friday, Sept. 9, 2011, at 1 p.m. ET.

UFC Fight Club members and UFC Newsletter subscribers, naturally, will be able to scoop up tickets prior to them being available for public consumption.

UFC 137 will be headlined by Welterweight Champion Georges St. Pierre putting his title -- and legacy -- on the line when he goes head on against former Strikeforce king Nick Diaz.

The co-main event will highlight a potential number one contender bout pitting "The Prodigy" B.J. Penn against "The Natural Born Killer," Carlos Condit.

Mirko Filipovic vs. Roy Nelson and Matt Mitrione vs. Cheick Kongo have also been announced for the card, as well as the Octagon debut of Hatsu Hioki vs. George Roop.

Here is the UFC 137 tickets sales schedule:

• UFC Fight Club presale: Wednesday, Sept. 7 at 1 p.m. ET
  
• UFC Newsletter presale: Thursday, Sept. 8 at 1 p.m. ET
• General tickets sale: Friday, Sept. 9 at 1 p.m. ET

UFC 137 tickets can be purchased through StubHub.com (Note: StubHub often has seats available even if the event is "sold out"). It will also be available to watch on pay-per-view at 9 p.m. ET on fight night.

For the latest UFC 137 news and notes check out our event archive right here.