UFC 121 takes place on October 23 and emanates from the Honda Center in Anaheim, California.
News of the bout was first reported by MMAJunkie.com.
Duffee blasted onto the scene with a seven second knockout against Tim Hague at UFC 98, a new UFC record. He made his return to the Octagon at UFC 114 against Mike Russow, a fight that saw Duffee dominate for much of the bout before gassing out in the third round before being clipped with a surprising shot that put the previously undefeated heavyweight to sleep. Duffee is looking to rebound from the loss and silence the critics who blasted the young fighter for his headhunting and lack of cardio.
Madsen is on a three fight winning streak with victories over Mostapha Al-Turk, Justin Wren, and Karlos Vemola. Having fought twice in 2010, the wrestler is undefeated in his MMA career and is looking to impress the upper management of the UFC with another dominant victory. Madsen trains alongside UFC Heavyweight Champion Brock Lesnar and Bellator heavyweight Cole Konrad in Minnesota and is known for his impressive wrestling ability.