Oh you thought the game of musical chairs was over? Well, it's not. Maybe it won't be until fight night actually gets here either.

That's because Gabriel Gonzaga has an injured back and has been forced to pull out of his scheduled bout against Roy Nelson on the main card of the UFC 146: "Dos Santos vs. Mir" pay-per-view (PPV) event scheduled for May 26, 2012, in Las Vegas, Nevada.

Gonzaga was originally booked to take on Shane Del Rosario; however, Alistair Overeem was removed from the main event, which created an opening that would ultimately be filled by Frank Mir. That meant Cain Velasquez, Mir's original opponent, needed a new dance partner. So it was decided Antonio Silva would move up to fight the former heavyweight champion, leaving Nelson all by his lonesome. So Gonzaga moved up and Del Rosario was booked to fight Stipe Miocic.

Now that "Napao" is hurt, Dave Herman has agreed to step up in his place to ensure this all-heavyweight main card dance goes off without a hitch at the MGM Grand Garden Arena in "Sin City."

Got all that? Good.

Herman is coming off his first loss under the Zuffa banner, a two-round beatdown at the hands of Stefan Struve at the UFC on FUEL TV 1: "Sanchez vs. Ellenberger" back on Feb. 15 in Nebraska. He angered UFC President Dana White, unbelievably enough, by failing to groom himself for the fight.

You can see in the picture of this post what I'm talking about. Dude looked like Sasquatch.

Nelson, meanwhile, is a mediocre 3-3 inside the Octagon. After retiring a debilitated Mirko Filipovic at last year's UFC 137, he was battered and bruised across three rounds by Fabricio Werdum at UFC 143 back in February, prompting White to once again ask him to lose some weight.

Didn't happen despite a social media campaign to get him down to Light Heavyweight. If he loses this one, don't be surprised if he's given an ultimatum -- 205-pounds or pink slip. Maybe that will finally be motivation enough.

UFC 146 will now feature a main event between Junior dos Santos vs. Frank Mir, while Cain Velasquez vs. Antonio Silva will serve as the co-featured fight of the night. Mark Hunt vs. Stefan Struve is also slated for primetime.

For more on UFC 146: "Dos Santos vs. Mir" be sure to hit up our event archive right here.