UFC 146: "Dos Santos vs. Mir" is all set to pop off tomorrow night (Sat., May 26, 2012) from the MGM Grand Garden Arena in Las Vegas, Nevada, featuring a heavyweight championship showdown pitting strap hanger Junior dos Santos putting it all on the line against Frank Mir.

Also on tap for the mixed martial arts (MMA) promotion's return to "Sin City" is an all heavyweight main card that features quite a few compelling match-ups, like Cain Velasquez return against Strikeforce import Antonio Silva, Roy Nelson vs. Dave Herman, and Stefan Struve vs. Lavar Johnson.

That's not all.

Before we can get to the good stuff, however, every one of the competitors on tomorrow night's fight card had to hit the scales to make sure they weren't carrying any extra baggage. Thankfully, none of them were and we're all good to go for the Memorial Day weekend extravaganza.

After the jump, you can check out photos (via Tracy Lee of CombatLifestyle.com) from today's UFC 146 weigh-in event. For complete UFC 146 weigh in results click here, for staredowns click here and to watch the full "Dos Santos vs. Mir" weigh-in video replay click here.

Junior dos Santos

Frank Mir

Cain Velasquez

Antonio Silva

Roy Nelson

Dave Herman

Stipe Miocic

Shane Del Rosario

Stefan Struve

Lavar Johnson

Last, and definitely not least, Ultimate Fighting Championship (UFC) ring girl, Brittney Palmer.

MMAmania.com will provide LIVE round-by-round, blow-by-blow coverage of the UFC 146 on tomorrow night, which is slated to air at 9 p.m. ET on pay-per-view. We'll also deliver live results from the "Prelims" bouts on Facebook earlier than that around 7 p.m. ET.

For more on UFC 146: "Dos Santos vs. Mir" be sure to check out our complete event archive right here. To view Tracy Lee's complete photo gallery for this event CLICK HERE.