Smith-Schuster (knee) practiced fully Thursday, Teresa Varley of the Steelers' official site reports.
As did Diontae Johnson (toe), essentially confirming that the duo's absence from practice Wednesday was maintenance-related. Smith-Schuster heads into Week 5 action with a 17/160/3 stat line through the Steelers' first three contests. He'll look to improve on his yardage rate Sunday against the 1-2-1 Eagles, who allowed San Francisco tight end George Kittle to rack up a staggering 15 catches for 183 yards and TD in Week 4.