Mackey tied it 1-1 at 16:01 when Dillon Dube's wide shot from the high slot deflected off him and behind Greiss.
"We have a good team here, but we've got to show it too," Backlund said. "We're far from where we're starting to doubt ourselves. We know we can win games.
"But, at the same time, we know we're a team that's going to win by keeping it low, not giving up goals. We know we'll be [in] tight scoring and once in a while we get a big win."
NOTES: Kyrou has six points (three goals, three assists) in a three-game point streak, and 10 points (four goals, six assists) in his past eight games. ...Calgary is 0-8-1 when trailing after two periods. ...Mackey's father, David, played three seasons with St. Louis from 1991-94.