Smith (back) is not practicing Friday after missing the last 12 minutes of Thursday's 5-4 loss to the Islanders, Ben Pope of the Chicago Sun-Times reports.
Smith missed Monday's game against the Rangers with a back issue, so it's likely a recurrence of the same injury. Smith has six goals and four assists over 26 games this season, including one goal on the power play. He should tentatively be considered day-to-day ahead of Saturday's road game in New Jersey.