The official weigh in event for UFC 143: "Diaz vs. Condit" is set to take place this Friday (Feb. 3, 2012) live from the Mandalay Bay Events Center in Las Vegas, Nevada.

The first fighter is expected to tip the scale at 7 p.m. ET.

As usual, MMAmania.com will provide up-to-the-second coverage of the UFC 143 weigh-ins, as well as provide a detailed recap of the festivities as soon as they conclude.

UFC 143 will be headlined by former Strikeforce welterweight champion Nick Diaz battling ex-WEC 170-pound kingpin Carlos Condit for the right to wear the division's Interim strap with Georges St. Pierre on the sidelines recovering from knee surgery.

In the co-main event, former welterweight number one contender Josh Koscheck will try to keep his spot among the 170-pound elite by taking on the venerable Mike Pierce.

Here is the current "Diaz vs. Condit" fight card and line-up:

Main event:

170 lbs.: Nick Diaz vs. Carlos Condit

Main card (Pay-per-view):

265 lbs.: Fabricio Werdum vs. Roy Nelson
170 lbs.: Josh Koscheck vs. Mike Pierce
135 lbs.: Renan Barao vs. Scott Jorgensen
185 lbs.: Ed Herman vs. Clifford Starks

Preliminary card (FX):

145 lbs.: Dustin Poirier vs. Max Holloway
170 lbs.: Matthew Riddle vs. Henry Martinez
135 lbs.: Alex Caceres vs. Edwin Figueroa
170 lbs.: Matt Brown vs. Chris Cope

Preliminary card (Facebook):

170 lbs.: Dan Stittgen vs. Stephen Thompson
185 lbs.: Rafael Natal vs. Michael Kuiper

For those fortunate enough to be in "Sin City" this week, remember the weigh-in is FREE to attend and open to the public. Doors to the weigh-in will open at 4 p.m. ET. In addition, UFC Fight Club members will be able to attend a special Q&A session with none other than Georges St. Pierre at 1 p.m. local time.

Remember that MMAmania.com will provide LIVE round-by-round, blow-by-blow coverage of the main card action on fight night (Sat., Feb. 4), which is slated to air at 10 p.m. ET on pay-per-view. The latest quick updates of the preliminary card action will begin to flow earlier than that around 6 p.m. ET.

It's going to be a fun night of fights so don't miss it. And remember to check us out for all the pre, during and post-fight UFC 143 coverage you can handle.

For all the latest news and notes on "Diaz vs. Condit" be sure to hit up our event archive right here.