Anderson Silva is on the clock.
The UFC middleweight champion has been given 24 hours to accept Chael Sonnen's proposal for a rematch on Super Bowl weekend with much more than UFC gold at stake.
"Anderson Silva, you absolutely suck," Sonnen told Joe Rogan after defeating Brian Stann at UFC 136. "Super Bowl weekend...the biggest rematch in the history of the sport. I'm calling you out, Silva. It's time to up the stakes. I beat you, you leave the division. I lose, I will leave the UFC forever."
Since the challenge, Silva has remained relatively quiet. His manager, Ed Soares, has gone on record to call Sonnen "delusional" and suggested that he "take a number and get to the back of the line."
At the UFC post-fight press conference, UFC President Dana White stated that Sonnen was likely Silva's next opponent.
There have been rumblings within Silva's camp of a shoulder injury that could keep him out of action for the early part of 2012.
"Anderson, you've got 24 hours to accept my offer. I suggest you take it; my next one won't be quite so nice," Sonnen tweeted on Saturday.
Sonnen has already taken verbal jabs at Silva, his wife and the entire country of Brazil. What could possibly be next?