Adam Oates yanked Braden Holtby in the first period but says the goalie will start in Dallas on Saturday.
It was not the start the Caps wanted in their home debut, but Alex Ovechkin and the offense were able to claw back from an early hole.
Capitals defenseman Jack Hillen had to be helped off the ice after a violent collision.
New arrival Alex Urbom is another big body for the Capitals' defensive unit. Watch the Caps battle the Flames tonight on CSN, coverage starts at 6:30 p.m.