Mixed martial arts is a sport with a passionate and expanding audience. Octagon (named for the eight-sided cage in which the fighters compete) presents photographs by Kevin Lynch, who was given unprecedented access to document the Ultimate Fighting Championship mixed martial artists, both ringside and behind the scenes. The centerpiece of the exhibition is a monumental grid of before-and-after photographs of the competitors prior to and following their matches. Using a globe light in order to best emulate locker-room lighting, Lynch's portraits of the fighters illustrate both their intensity and their vulnerability.

Also included with this exhibition to provide context is a DVD of an Ultimate Fighting Championship event that occurred at San Diego's Miramar Marine Corps base. Octagon is accompanied by an illustrated exhibition catalogue featuring a foreword by playwright David Mamet and an essay by art critic Dave Hickey.