He was introduced to mixed martial arts when he began training and frequently sparring with legendary fighter Don Frye.
[2] He fought and quickly defeated Johnathan Tsosie, an 0–3 fighter at the time, only eighteen seconds into round one.
In April 2006, Griggs took his second fight against UFC veteran Homer Moore, on a Rage in the Cage card.
Griggs signed with the IFL in 2007, and was picked to be a part of the Tucson Scorpions, coached by Don Frye.
He returned in April 2009, winning against Jon Alexander at Ultimate Style Fighting: Rumble in Wyoming.
Griggs was expected to face Phil Davis in his Light Heavyweight debut on August 4, 2012, at UFC on FOX 4.
[8] After moving down to Light Heavyweight, Griggs lost to Cyrille Diabaté via first round rear-naked choke submission on November 17, 2012, at UFC 154.