Several media outlets said as many as a dozen people were sent to a hospital for treatment. Video from KMOV-TV showed one man wearing a Blues jersey leaving the Scottrade Center on a stretcher with an apparent leg injury.
A Blues spokesman said the team was investigating the incident. It wasn't clear if any of the injuries were serious.
KMOX-AM said witnesses reported the escalator was full after the game ended when it suddenly sped up and knocked people off balance.