Mark Munoz vs. Aaron Simpson set for UFC 123

All-American wrestlers Mark Munoz and Aaron Simpson will square off in a middleweight bout at UFC 123 in Detroit.

"I guess it is out. I'm fighting Mark Munoz Nov 20th in Detroit at the Palace. It's gonna be weird...Mark is a really good friend of mine and possibly one of the nicest guys you could ever meet. 10 weeks til I punch him in the face!" Simpson wrote on Facebook.

Since moving down to middleweight, Munoz (8-2, 3-2 UFC) has amassed a 3-1 record, with his lone loss coming to Yushin Okami at "UFC Live on Versus 2."

Simpson (7-1, 3-1 UFC) will look to rebound from his first professional loss, a TKO stoppage to Chris Leben at "The Ultimate Fighter 11 Finale."

Munoz last three fights:
Loss (Split Decision) Yushin Okami - UFC Live on Versus 2
Win (TKO - punches) Kendall Grove - UFC 112
Win (Submission - punches) Ryan Jensen - UFC 108

Simpson last three fights:
Loss (TKO - punches) Chris Leben - The Ultimate Fighter 11 Finale
Win (Split Decision) Tom Lawlor - UFC Fight Night 20
Win (TKO - injury) Ed Herman - UFC 102

Props: UFC.com