UFC lightweight was a two-time Strikeforce Lightweight Champion.
He studied education at San Francisco State University before starting his amateur fighting career.
He was named the MMA Lightweight of the Year in 2006.
His longtime girlfriend, Keri Anne, gave birth to his first daughter, Keylakay, in August 2010. He and Keri Anne got married in 2013.
He unsuccessfully challenged Benson Henderson for the UFC Lightweight title on April 20, 2013.