Nick Diaz Signs New Fight Contract With UFC, Weigh-In Results For UFC On FOX 12

- Nick Diaz is coming back to the UFC, as the former No. 1 contender signed a new three-fight deal with the promotion recently. Diaz has not fought since a 2013 decision loss to Georges St-Pierre for the welterweight title.

Diaz, who turns 30 years old in August, announced his retirement – again – following the defeat. He has lost his last two, also falling via decision to Carlos Condit. Diaz is a former Strikeforce welterweight champion.

"I've been getting some things done," said Diaz, in an interview with UFC.com after signing his new contract. "I've been staying in shape pretty good, doing a lot of running. It's been a good experience having this much time off. I can fight tomorrow, tonight."

- UFC on FOX 12 is now official, as weigh-ins went down earlier today. In the main event, welterweight contenders Robbie Lawler and Matt Brown meet to determine the No. 1 contender to the title.

Lawler weighed in at 171 pounds, while Brown hit the scale at 172.5. The co-main event boasts Anthony Johnson and Antonio Rogerio Nogueira. Brown came in a pound-and-a-half over and will need to get down to 171 or give away 20-percent of his purse.

Complete results from the weigh-ins can be found below.

MAIN CARD (FOX/8 p.m. ET)

Robbie Lawler (171 lbs.) vs. Matt Brown (172.5)

Anthony Johnson (204.5) vs. Antonio Rogerio Nogueira (205.5)

Clay Guida (145) vs. Dennis Bermudez (146)

Josh Thomson (155) vs. Bobby Green (155.5)

PRELIMINARY CARD (FOX/6 p.m. ET)

Jorge Masvidal (155.5) vs. Daron Cruickshank (155.5)

Kyle Kingsbury (204.5) vs. Patrick Cummins (206)

Tim Means (170.5) vs. Hernani Perpetuo (171)

Brian Ortega (145.5) vs. Mike De La Torre (146)

PRELIMINARY CARD (UFC Fight Pass/4:15 p.m. ET)

Akbarh Arreola (155.5) vs. Tiago Trator (155)

Gilbert Burns (170) vs. Andreas Stahl (171)

Juliana Lima (117) vs. Joanna Jedrzejczyk (115)

Steven Siler (146) vs. Noad Lahat (145)