Buffalo Sabres forward Tyler Ennis, who has missed the past four games because of an upper-body injury, is week-to-week as far as his return, the Sabres announced Thursday.
Ennis has three goals and 10 points in 19 games this season.
The Sabres announced defenseman Mark Pysyk also is week-to-week because of a lower-body injury. Pysyk, who has one assist in 18 games, has missed the past seven games.
The Sabres host the Arizona Coyotes on Friday.