Dallas Cowboys OG La’el Collins (toe), LB Andrew Gachkar (neck), QB Tony Romo (back) and OT Tyron Smith (back) did not participate in practice Wednesday, Sept. 28. DE Jack Crawford (shoulder), OT Doug Free (quadriceps), FS Jeff Heath (knee), LB Mark Nzeocha (Achilles’) and CB Orlando Scandrick (hamstring) were limited during practice.