Stout isn’t believed to be injured. However, it’s likely he is still grieving over this month’s unexpected death of his brother-in-law and longtime trainer, Shawn Tompkins.
Cerrone owns a 16-3 professional record and will be riding a five-fight winning streak into the October 29th event. The “Cowboy” was just seen two weeks ago posting a TKO victory over Charles Oliveira at “UFC on Versus 5.”
Siver is perfect through his last four scraps, with his most recent coming in a unanimous decision win over Matt Wiman at UFC 132. The German holds a 19-7 pro mark.
It is believed the 155-pound affair will appear in the pay-per-view portion of the festivities.
UFC 137 takes place inside the Mandalay Bay Events Center in Las Vegas, Nevada. A welterweight title tilt between champion Georges St-Pierre and Nick Diaz will headline the show.
Here is the card’s updated roster:
Bart Palaszewski vs. Tyson Griffin
Dannny Downes vs. Ramsey Nijem
Hatsu Hioki vs. George Roop
Tim Credeur vs. Brad Tavares
Jeff Curran vs. Scott Jorgensen
Eliot Marshall vs. Brandon Vera
(Pay-Per-View 9PM ET/6PM PT)
Dennis Siver vs. Donald Cerrone
Roy Nelson vs. Mirko “Cro Cop” Filipovic
Matt Mitrione vs. Cheick Kongo
Carlos Condit vs. BJ Penn
Nick Diaz vs. Georges St-Pierre (UFC Welterweight Champion)