Jesse Chatman missed his second straight practice because of the ankle injury he's been battling for three weeks. Samkon Gado again worked with the first team and would likely start if Chatman, who has rushed for 435 yards and one touchdown, isn't cleared to play."We're just taking it day by day, it's a trainers decision," said Chatman, whose limp has decreased. ""It's frustrating, but I can't regress. Got to continue to progress. It's getting a lot better so I'll assume I'll be upgraded for Sunday.Coach Cam Cameron said the running game will be a "running back by committee" between Gado, rookie Lorenzo Booker, a pass catching specialist, and Patrick Cobbs if Chatman isn't available.