OL Will Svitek is lone absence at practice

FOXBOROUGH, Mass. -- Veteran offensive lineman Will Svitek was the lone absence at Patriots practice on Thursday morning, which was conducted in helmets and shells three days prior to their regular-season opener against Buffalo.

Svitek didn't participate in Wednesday's practice because of a knee issue that has been bothering him since the preseason finale.

Tight end Rob Gronkowski was once again on the field and working with his teammates, as was wide receiver Danny Amendola, both of whom were listed as limited on Wednesday's injury report. Amendola, who is nursing a groin issue, showed no noticeable signs of ill effects during the media portion of practice.

Should Svitek be forced to sit on Sunday, the Patriots have internal options to fill his spot on the depth chart. The team claimed a pair of interior linemen on waivers last weekend, adding center Braxston Cave and guard Chris Barker from Cleveland and Miami, respectively.

Marcus Cannon gives the team a reserve option at right tackle, with Sebastian Vollmer as a candidate to slide to left tackle in the event of an injury to starter Nate Solder. Cannon can also play guard, with Barker as a possible second reserve if the team endures major interior issues.

The Patriots will practice on Friday before traveling to Buffalo on Saturday.