Daunte Culpepper passed his physical on Tuesday and could start for the Lions on Sunday against the Jaguars. Culpepper, 31, announced his retirement earlier this season, but signed a two-year deal with Detroit. "He's a veteran player that has had some great performances and still has excellent arm strength. We'll get him to work and see how fast he picks things up and what he can do," coach Rod Marinelli said of Culpepper. Dan Orlovsky, who has started four straight games since Jon Kitna was injured, sprained his thumb in the Lions' 27-23 loss in Chicago last week.