BUFFALO, N.Y. - Sabres defenceman Robyn Regehr has been activated from injured reserve and is expected to play against the Boston Bruins on Sunday.

Regehr had missed seven games with a lower body injury from a 3-2 loss at Washington on Jan. 27. To make room on the roster, the Sabres (5-6-1) waived fourth-line forward Matt Ellis for reassignment to Rochester in the AHL.

Struggling defenceman Tyler Myers was a healthy scratch for a second consecutive game. Rookie centre Mikhail Grigorenko was a healthy scratch for the first time this season.

For the Bruins (7-1-1), centre Shawn Thornton returned after missing two games with a concussion. Also back were forwards Daniel Paille (upper body), who missed two games, and Brad Marchand (upper body), who missed one game.