Calgary Flames veteran defenceman Rhett Warrener is out of action after spraining his knee in Tuesday's exhibition game against the Vancouver Canucks.
A timeline for his return has not been determined.
"We're still not certain of a timeline for it," said head coach Jim Playfair. "He's on rehab right now."
Meanwhile Flames prospect and former first round draft pick, Eric Nystrom, has a bruised shoulder from Thursday's game against Edmonton.
"Eric's shoulder is a bad bruise so that's good news for us," said Playfair