Maroon will be a healthy scratch for Friday's home game versus the Sharks, Jeremy Rutherford of The Athletic reports.
Maroon tallied seven penalty minutes and failed to record a point in Wednesday's 3-2 loss to the Canadiens.
Maroon scored a power-play goal in Friday's 3-0 preseason win over the Blue Jackets.
Maroon doesn't look restricted during informal skates after having back surgery in the spring, Lou Korac of NHL.com reports.
Maroon (back) will resume skating this week after receiving clearance from his medical team, Lou Korac of NHL.com reports.
Maroon (back) agreed to terms on a one-year, $1.75 million contract with St. Louis on Tuesday.
Maroon is expected to sign a deal with St. Louis, Jeremy Rutherford of The Athletic St. Louis reports.
Maroon underwent surgery last Wednesdy to repair a herniated disc in his back, Tom Gulitti of NHL.com reports, adding that the winger will still be prepared for training camp.
Maroon assisted on both of his team's goals in Thursday's 2-1 win over Toronto.
Maroon (lower body) will rejoin the lineup for Thursday's game against the Penguins, Amanda Stein of the team's official site reports.