Roy joins a list of ailing Sabres that includes goalie Ryan Miller (abdominal strain) and defencemen Henrik Tallinder (broken forearm) and Toni Lydman (neck strain). Forward Maxim Afinogenov missed the last five games because of a shoulder injury, but was scheduled to return Friday night when Buffalo hosts Pittsburgh. Afinogenov was the team's leading scorer when he was hurt against Toronto on Nov. 4.
"I'm frustrated, but it's something we haven't used as an excuse and we're not going to use as an excuse," Sabres coach Lindy Ruff said after the team's morning skate Friday.
Roy is tied for sixth on the Sabres with 14 points. His plus-11 rating in second on the team.
Miller has been improving, and Ruff said he could play Saturday in Ottawa.