The last time Bears QB Kyle Orton was getting ready for a game agains the Colts he was doing his best Peyton Manning impersanation and by all accounts was pretty good at it.

He looked the part anyway, and he didn't have to switch from his No. 18 jersey. By all accounts -- linebacker Hunter Hillenmeyer jokingly called him ''Peyton Manning reincarnated'' -- Orton, then the Bears' No. 3 quarterback, pulled off the act of mimicking the Indianapolis Colts quarterback in preparations for Super Bowl XLI in February 2007.

Desmond Clark was on the field for the first time since injuring his knee.

Clark should be ready to start Sunday at Indianapolis. He has no concerns about the FieldTurf at the new Lucas Oil Stadium.

"If it was a concern, you shouldn't be out here," Clark said. "It's no concern for me. I'm full go, and I expect to go out there and play my normal game."