While the top of the lineup is relatively set, there are a number of players competing for limited jobs in the bottom six.
The St. Louis Blues have a problem: too many players doing well enough to earn a role in the team's bottom six, but not nearly enough roster spots to go around.
Ok, so it's not a real problem but, unfortunately, there will be cuts by the end of preseason: the Blues, like the rest of the league, only have 23 roster spots to go around.