Brian Stann, one of the most respected figures ever to grace the sport of mixed martial arts, is moving on.

Stann announced via Instagram on Monday that he is resigning from his position as UFC color commentator to pursue other opportunities.

The Scranton, Penn. native had a memorable run through the sport. He earned early publicity as a fighter in the WEC due to his background as a Silver Star winner for valor as a Marine Corps lieutenant during the Iraq War. He then went on to hold the WEC light heavyweight title.

Stann finished his career in the UFC, announcing his retirement after a memorable second-round TKO loss to Wanderlei Silva on March 3, 2013. His pro record was 12-6.

From there, Stan went on to become one of the sport’s most well-regarded color commentators, raising the bar for the position with his professionalism and thoroughly researched analysis.

You can see Stann’s Instagram statement below.