American professional mixed martial artist who is known for competing in the Lightweight division of the UFC. He is also known for having competed for Strikeforce, the WEC, and King of the Cage.
He first began wrestling at the age of five. He attended Johnsburg High School where he was a three sport athlete. At Harper College he won a national championship in 2001. He then went on to make his professional debut in the summer of 2003.
He has won several awards for his fighting including Fight Magazine's Fight of the Year in 2007 as well as the Fight of the Year in 2009 at the World MMA Awards.
He was born and raised in Round Lake, Illinois.