The UFC on FOX 2 card continues to shake up a bit as UFC officials announced that Nik Lentz will replace Paul Sass against Evan Dunham. The lightweight bout will remain on the preliminary portion of the card. Sass suffered an injury while training and there is no return date set.

It’s a quick turnaround for Lentz, who recently fought at UFC 140, dropping a unanimous decision to Mark Bocek. Prior to that loss, “The Carny” was unbeaten in the UFC, posting five wins, a draw, and a loss to Charles Oliveira that was overturned to a no contest after it was determined that an illegal knee led to the finish. Lentz holds victories over the likes of Tyson Griffin, Andre Winner, and Drew Fickett.

Dunham is coming off a dominating decision victory over Shamar Bailey at UFC Fight Night 25. The Oregon native had lost back-to-back bouts to Sean Sherk and Melvin Guillard before snapping his losing streak against Bailey.

UFC on FOX 2 is scheduled for January 28 at the United Center in Chicago, Illinois. The night will be headlined by a pair of #1 contender bouts as light heavyweights Rashad Evans and Phil Davis battle in the main event while middleweights Chael Sonnen and Mark Munoz square off in the co-main event. Michael BispingDemian Maia will also take place on the same card.