Smith took part in only non-contact drills without defensive backs at the beginning of Monday's workout, during which he wore a baseball cap. But Smith looked sharp running routes and made a leaping grab of Matt Moore's high pass.
Smith later caught light passes off to the side from backup QB Jimmy Clausen in his most extensive work since he broke his forearm playing flag football in June.
The four-time Pro Bowl selection remains on schedule to play in the regular-season opener. Coach John Fox was noncommittal when asked if Smith would play in a preseason game.