Pruitt (knee) didn't practice Wednesday, Teresa Varley of the Steelers' official site reports.
Pruitt likely suffered a knee injury during the Steelers' Week 2 win, and following Wednesday's DNP, it appears he could be in jeopardy of missing Sunday's matchup with the Chargers. The 32-year-old's practice participation Thursday and Friday will provide a better indication of his availability for Week 3.