UFC 146: Dos Santos vs. Mir was a mixed martial arts event held by Ultimate Fighting Championship on May 27 (aus time), 2012 at the MGM Grand Garden Arena in Las Vegas, Nevada.
Frank Mir was riding a three fight win streak leading up to this event, including a notable submission victory over Antônio Rodrigo Nogueira, a friend and mentor of Junior Dos Santos, at UFC 140.
This was the first title defense for Dos Santos since winning the belt by knocking out Cain Velasquez in November of 2011.
Mark Hunt was originally scheduled to face Stefan Struve on the main card.
Main Card Results
Junior dos Santos defeated Frank Mir
TKO (punches) Round 2 3:04
Cain Velasquez defeated Antonio Silva
TKO (punches) Round 1 3:36
Roy Nelson defeated Dave Herman
KO (punch) Round 1 0:51
Stipe Miočić defeated Shane del Rosario
TKO (elbows) Round 2 3:14
Stefan Struve defeated Lavar Johnson
Submission (armbar) Round 1 1:05
Preliminary Card Results
Darren Elkins defeated Diego Brandao
Decision (unanimous) (29-28, 29-28, 29-28)
Jamie Varner defeated Edson Barboza
TKO (punches) Round 1 3:23
C.B. Dollaway defeated Jason Miller
Decision (unanimous) (29-28, 30-26, 29-28)
Dan Hardy defeated Duane Ludwig
KO (punch and elbows) Round 1 3:51