Marshall Faulk took 2006 off due to injury, but he has left the door open on a potential return. "I don't know," said Faulk with a sly smirk about returning to the NFL. "It's all health-related. I have my good days, and I have my bad days." Faulk has not played football in more than a year. He had minor surgery on both of his knees about a year ago. "Clean up" surgery, he called it. But his left knee did not respond, and he missed the Rams' mini-camps and off-season workouts. Then he had reconstruction on the left knee in August, forcing him to sit out the 2006 season.