When the injury occurred wasn't immediately obvious.
The Steelers said postgame that Smith-Schuster was being evaluated.
Smith-Schuster had three catches on four targets for 25 yards, including one that went for 16 yards. The Steelers already entered Sunday's game without their top target, as wide receiver Diontae Johnson was inactive with a knee injury sustained on the final play of the Week 2 loss to the Las Vegas Raiders.
Soon after, right tackle Chukwuma Okorafor was helped off the field after a false start when sustaining an apparent injury and was replaced with Joe Haeg. Okorafor was later ruled out and was being evaluated for a concussion.
Also, center Kendrick Green was being evaluated with a knee injury.