The main event of UFC On Fox 5 saw Benson Henderson defeat Nate Diaz to retain the UFC Lightweight Championship. B.J. Penn returned from his 14 month retirement in a loss to Rory MacDonald.

Main Card
Benson Henderson Defeated Nate Diaz Via Unanimous Decision
Alexander Gustafsson Defeated Mauricio Rua Via Unanimous Decision
Rory MacDonald Defeated B.J. Penn Via Unanimous Decision
Matt Brown Defeated Mike Swick Via KO at 2:31 of Round 2

Preliminary Card
Yves Edwards Defeated Jeremy Stephens Via KO at 1:55 of Round 1
Raphael Assuncao Defeated Mike Easton Via Unanimous Decision
Ramsey Nijem Defeated Joe Proctor Via Unanimous Decision
Daron Cruickshank Defeated Henry Martinez Via KO at 2:57 of Round 2
Abel Trujillo Defeated Marcus LeVesseur Via TKO at 3:56 of Round 2
Dennis Siver Defeated Nam Phan Via Unanimous Decision
Scott Jorgensen Defeated John Albert Via Submission at 4:59 of Round 1

Fight of the Night: Scott Jorgensen Vs John Albert
Knockout of the Night: Yves Edwards
Submission of the Night: Scott Jorgensen