The Steelers second day of practice on Thursday for preparations against the New York Giants was headlined by RB Willie Parker (knee) being limited in practice time. Parker\'s status for Sunday is still up in the air it seems. LB Keyaron Fox (hamstring), CB Bryant McFadden (forearm), DE Aaron Smith (not injury related) and T Marvel Smith (back) all sat out practice on Thursday. RB Najeh Davenport (not injury related), DE Brett Keisel (not injury related), CB Deshea Townsend (not injury related) and WR Hines Ward (not injury related) all returned to practice fully on Thursday after being given the day off on Wednesday. S Troy Polamalu made it through his second straight practice after suffering a concussion last weekend.