After Coach Barry Trotz said he needed to see more from the Russian winger, Galiev delivered.
The Capitals' finalized roster seemingly answered the questions the team entered training camp with and leaves cap flexibility for potential future additions.
The Capitals have nearly a week off in between its last preseason game and the regular-season opener.
The deadline for the opening day playing roster is Tuesday at 5 p.m.
The Capitals scored three power-play goals on Sunday night.
Barry Trotz said the third-line center was held out of the game as a precaution.
The cut could clear the way for Derek Roy, who's with the team on a professional tryout contract.
Look for Tom Wilson, T.J. Oshie and Justin Williams to see time with the penalty kill unit this season.
The Capitals still have five or six cuts to make, depending on how many players they want to carry until Nicklas Backstrom is healthy.
Washington Coach Barry Trotz said Jay Beagle will be the team's third-line center to start the season.