Bailey’s assignment means winger Tyler Ennis, out since undergoing groin surgery Nov. 10, could return Monday against Dallas. Ennis began practicing with the Sabres again in late December.
The Sabres summoned Ullmark because goalie Robin Lehner was battling the flu.
Bailey has one goal in nine NHL games this season. Ullmark hasn’t made an NHL appearance in 2016-17.
The Sabres have today off. The Amerks play this afternoon in Toronto