The Sabres will be without their top left winger Saturday night as Matt Moulson has left First Niagara Center because he isn't feeling well. The sudden departure forced Buffalo to recall Johan Larsson from Rochester.
Moulson is fourth on the Sabres in scoring with seven goals and 15 points in 32 games. He has excelled for the last month since joining a line with center Zemgus Girgensons and left wing Tyler Ennis.
Moulson's status for Sunday's game in Boston is unknown.
Larsson has no points in four games with Buffalo this season. The forward has eight goals and 23 points in 26 games with Rochester.
Buffalo recalled Mikhail Grigorenko from the Amerks on Saturday morning to replace injured Torrey Mitchell for the second straight game.