MMAmania.com has just learned that Nick Diaz will not fight Elite XC Lightweight Champion KJ Noons on the next CBS show entitled "Unfinished Business," which is slated for July 26.

The match up appeared to be all but guaranteed -- Noons and Diaz were involved in a post-fight tussle at the "Return of the King" show earlier this month after Noons defended his 160-pound title against Yves Edwards. Diaz was invited in to the ring to discuss a rematch with Noons and the entire situation descended into chaos rather quickly.

Noons defeated Diaz via technical knockout (cuts) at Elite XC: "Renegade" back in November 2007. It was a decision that did not sit well with the volatile Diaz and the smack talk has escalated ever since.

Recent speculation has the July 26 CBS show headed for Stockton, Calif., which is where Diaz calls home. He'll likely still compete on the card, considering it's possibly in his backyard and his scheduled fight against Hayuto "Mach" Sakurai for the Dream welterweight title fight on July 21 (just five days prior to "Saturday Night Fights") was recently scrapped because of contractual obligations with Pro Elite (the Elite XC parent company).

Stay tuned for more details on this developing story.