Buffalo Sabres coach Lindy Ruff clutched his right arm in pain and had to be helped off the ice after being upended by defenseman Jordan Leopold in practice on Monday.
The Sabres had no immediate update on Ruff's status, except to say the coach would not be available to address reporters as he usually does after practice.
A person familiar with what happened told The Associated Press that Ruff was escorted outside of the arena by a team trainer. The person spoke on the condition of anonymity because the person is not authorized to comment on team matters.
Ruff was hurt during a puck-chase drill as Leopold was trying to cut off forward Ville Leino. Ruff was standing in the middle of the ice looking the other way when Leopold said he lost his footing and went sliding head first and crashed into the back of his coach's skates.
Ruff fell backward and landed on his right arm with a heavy thud, and was fortunate not to hit his head. Witnesses said they heard Ruff yell out in pain.
A Sabres trainer went out to tend to Ruff, who required assistance as he slowly skated off the ice.
''I was racing for the puck with Ville, and I ended up losing an edge,'' Leopold said. ''Right when I hit the deck I knew there was no way I was getting up. I was yelling, 'Heads, heads, heads.' Lindy had his back to me, and it ended up happening.''
Leopold called it a ''freak accident."
''I lost my breath. I was looking back right when it happened and I yelled, 'Are you all right?' And right away, 'No.' So that wasn't a good thing,'' he said. ''That was one of those unexpected ones. Those ones are dangerous.''
The injury is to the same arm the 51-year-old Ruff had hurt and was surgically repaired during his NHL playing career.
The Sabres are off until Wednesday, when they play Boston in opening a four-game homestand.
In his 14th season with the Sabres, Ruff is the team's winningest and longest-serving coach.
His injury is the latest to hit a team that's been banged-up for much of this season. Captain Jason Pominville is the only player not to have missed a game this year.
''Scary situation, just hoping he's going to be all right here,'' goalie Ryan Miller said. ''Lindy's broken a few bones and had a few scrapes and a few cuts in his career. To see him in that much pain, I think he probably has something going on there. And hopefully he's all right. We need him behind the bench yelling and calling the lines.''
