New England Patriots RB Rex Burkhead (ribs) and DT Vincent Valentine (knee) did not practice Friday, Sept. 2. Burkhead is out for Week 3, while Valentine was placed on the Reserve/Injured list. WR Danny Amendola (concussion, knee), OT Marcus Cannon (ankle, concussion), WR Phillip Dorsett (knee), S Nate Ebner (shoulder), CB Stephon Gilmore (groin), TE Rob Gronkowski (groin), LB Dont’a Hightower (knee), WR Chris Hogan (knee), LB Elandon Roberts (thumb), CB Eric Rowe (groin) and WR Matthew Slater (hamstring) were each limited in practice and considered questionable for the game against the Houston Texans.