The Marlins were one of several teams on hand to watch outfielder Shannon Stewart provide a private workout Friday in Florida. Stewart could be considered an option to play center field. But he has played just 98 games at the position during a career that began with Toronto in 1995, none since 2000. And he has been plagued by ailments in both feet in recent years. A career .299 hitter with 102 home runs, Stewart was limited to 44 games last season with the Minnesota Twins. He also was being scouted by the Mariners, A's, Rangers, Angels, Reds, Padres and White Sox.