"Running back Joseph Addai is optimistic he'll return to the Indianapolis Colts' offense Sunday against the Oakland Raiders.

Linebacker Clint Session isn't quite so certain.

"I don't want to say I'm playing, (but) I've got a good chance of playing," said Addai, who has missed the past eight games after suffering a neck injury Oct. 17 at Washington. "I practiced (Wednesday) and I felt good. I didn't set myself back."