Maroon registered an assist and a plus-2 rating in Saturday's win over the Devils.
Maroon appeared to injure his leg after crashing into the boards during Monday's practice, but coach Craig Berube said he was okay afterwards, Jim Thomas of the St. Louis Post-Dispatch reports.
Maroon produced a secondary assist as well as a plus-2 rating and four hits in Saturday's 3-2 win over the Senators.
Maroon (upper body) was activated from injured reserve Friday.
Maroon (upper body) is trending toward being available either Friday or Saturday against Nashville or Winnipeg respectively.
Maroon (upper body) has been placed on injured reserve, per the NHL's official media site.
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.