Record: 13 - 7
Height: 6'0" (183cm)
Weight: 170 lbs
Age: 28

Fighting out of: Concord, USA
Camp: Cesar Gracie Jiu Jitsu Academy
Nate Diaz Tweets

Nathan Donald (Nate Diaz (born April 16, 1985) is an American mixed martial artist, currently competing for UFC in the lightweight division. He is well known as the Ultimate Fighter Season 5 champion, and has amassed victories in Strikeforce and the World Extreme Cagefighting promotions. Diaz is a graduate of Tokay High School in Lodi, California and holds a brown belt in Cesar Gracie jiu-jitsu. He is the younger brother of UFC veteran Nick Diaz.Diaz is affiliated with the Cesar Gracie Jiu-Jitsu Academy in Pleasant Hill, California, where he trains under Brazilian Jiu-Jitsu black belt Cesar Gracie.

He was a contestant on The Ultimate Fighter 5 show, exclusively featuring lightweights. He fought on Jens Pulver's team. In the preliminary round, Diaz defeated Rob Emerson by submission; in the quarterfinals he defeated fellow Team Pulver teammate Corey Hill via triangle choke in the first round. In the semifinals, he defeated Team Penn member Gray Maynard by submission, advancing to the finals where he faced Manny Gamburyan. Though Gamburyan won the first round, he was forced to submit in the second round due to the dislocation of his right shoulder as the result of attempting a takedown. With this, Diaz became the winner of The Ultimate Fighter 5.

After defeating Alvin Robinson at UFC Fight Night 12 he demanded tougher fighters. Diaz was given a match with Kurt Pellegrino at UFC Fight Night 13. Diaz defeated Pellegrino via submission (triangle choke) in the second round. The choke was so well placed that Diaz had time to flex for the crowd and throw up double middle fingers before putting Pellegrino away.

Diaz defeated Josh Neer by split decision at UFC Fight Night 15.

Diaz fought Clay Guida at UFC 94: St. Pierre vs. Penn 2 and lost via split decision.