The Philadelphia Eagles announced that left tackle Jason Peters ruptured his right Achilles tendpm earlier this week and will undergo surgery next week.
News of Peters' injury was originally reported by Geoff Mosher of The News Journal.
"I'm hearing that one BIG reason that the Eagles re-signed King Dunlap today is that Jason Peters may have an injury. Working to confirm," Mosher wrote on Twitter on Friday mornig. "Also told by a different source that Peters sustained the injury during a workout."
Peters, 30, went undrafted out of Arkansas in 2004 and has gone to five straight Pro Bowls, including in all three seasons with the Eagles, who acquired him from the Buffalo Bills in 2009. The injury typically takes four-to-six months to recover, which means Peters could open the season on the physically unable to perform list.
Earlier on Friday, the Eagles announced that they had re-signed "swing" tackle King Dunlap to a one-year contract that could be worth up to $2.2 million. If the Eagles don't sign a free agent or draft a tackle, Dunlap could play right tackle with Todd Herremans moving over the left side while Peters recovers from surgery.