An undisclosed injury has forced "Crazy" Tim Credeur to withdraw from his upcoming fight against Mike Massenzio at the Jan. 11 Ultimate Fight Night 20 event from the Patriot Center in Fairfax, VA, according to MMAMadness.com.

Ultimate Fighter (TUF) 7 contestant Gerald Harris has answered the call to face the Paterson native.

Harris (13-2) was bounced from the Spike TV reality show by eventual winner Amir Sadollah. Since then, Harris has been on a torrid six-fight winning streak, including a devastating knockout over Nissen Osterneck this past September to become the Shark Fights middleweight champion.

Massenzio (11-3) is a two-time high school state wrestling and a national junior college champion from Bergen Community College out of Paramus, N.J. He was among several talented fighters the UFC signed to multi-fight contracts after the now defunct International Fight League (IFL) fire sale.

He looked impressive in his debut for the promotion, submitting Drew McFedries via first round submission (Kimura) at UFC Fight Night 15 in Omaha, Neb., on September 17. He was cooled off in his sophomore effort by CB Dollaway in December of 2008 despite the controversial "Tapgate" fiasco.

This will be an exciting match up between two very talented middleweights.

UFC Fight Night 20 features a rematch between Ultimate Fighter rivals Gray Maynard (8-0) and Nate Diaz (11-4), who will duke it out in a possible number one contender bout for the 155-pound title. Undefeated lightweights Efrain Escudero and Evan Dunham are also scheduled to hook 'em up.

For more on UFC Fight Night 20 click here.