A lightweight bout between Shane Roller and Jacob Volkmann has been booked for UFC 151 in September.
UFC officials on Tuesday announced the fight, which Roller previously had mentioned on his Twitter feed.
UFC 151 takes place Sept. 1 at Mandalay Bay Events Center in Las Vegas. The event's main card airs live on pay-per-view. FX and Facebook are expected to carry preliminary-card fights. The main event is a light heavyweight title fight between champion Jon Jones and former Strikeforce