Calgary Flames goaltender Mike Smith is considered day to day with a lower-body injury following an MRI that revealed positive news, head coach Glen Gulutzan said Tuesday.

Smith was helped off the ice near the end of Sunday's game against the New York Islanders with what appeared to be a groin injury.

Backup netminder David Rittich will play Tuesday against the Boston Bruins in a game he was originally slated to start. Smith also won't play Thursday against the Nashville Predators, but from there he will be considered day to day, Gulutzan told reporters.

Smith has been an invaluable member of the Flames this season. He ranks second in the league with 47 games started and has a .921 save percentage and a 2.53 goals-against average.

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