Hannan appeared to have suffered a serious injury after falling awkwardly on his knee in the final minutes of the game, and Flames coach Brent Sutter was relieved the veteran defenseman didn't suffer a more serious injury.
"When you look at how it happened, it's a good thing he didn't get injured on it," Sutter said. "At the time he was a little sore, but he's recovered from it in the last 48 hours. That's a good thing. When you see something like that you're always thinking the worst, but it worked out good."
Tanguay, who left the game midway through the third period with an apparent shoulder injury, also will be in tonight's lineup.