Stewart missed Saturday's practice with the flu, reports the Olean Times Herald.Stewart's status for Sunday's tilt against Philadelphia is unclear, but the flu shouldn't sideline Stewart for long. The big power forward has been excellent of late, scoring four points in his past four games and revitalizing the team's woeful power play. Head coach Ted Nolan said the Sabres will be looking to call up a player from AHL Rochester, though he didn't say if it was going to be a forward.