BUFFALO, N.Y. -- Sabres coach Lindy Ruff ruled out leading scorer Tage Thompson and starting goalie Ukko-Pekka Luukkonen from playing in Buffalo's home game against the St. Louis Blues on Thursday night.

Both remain listed day-to-day and in position to return Saturday, when the Sabres travel to play the Philadelphia Flyers.

Thompson, whose 11 goals entering the day are one off the NHL lead, has a lower-body injury he sustained in a 7-5 loss to Montreal on Monday. Luukkonen is dealing with what Ruff called a minor ailment.

Devon Levi is expected to start against the Blues, with James Reimer to serve as the backup, a day after being claimed off waivers after being released by Anaheim.