Head coach Andy Reid cannot predict the future, so he's making no guarantees that the Eagles will have starting right tackle Shawn Andrews when the 2009 regular season opens next month.

Andrews completed the timing and testing drills the first full day the veterans were in camp and felt tightness in his back afterward. Reid said Sunday that he is uncertain whether he will have the services of the two-time Pro Bowl offensive lineman when the Eagles square off against the Carolina Panthers on Sept. 13.

"I don't that. I can't tell you that," Reid said. "Until he's out here, I can't predict that. I just know that he's getting better."

Meanwhile, the door remains open for a possible return of veteran tackle Jon Runyan, who had microfracture surgery on his knee in the offseason. Reid acknowledges that the team has kept tabs on his recovery.

"We have a pretty good idea of where he's at," Reid said. "Obviously, I saw him at the funeral service for Jim (Johnson) and talked to him there. We'll just see how things go. He's working hard at getting back and that's really what his primary focus should be, whether it's here or somewhere else."

Building continuity along the offensive line is key, and with the first preseason game just four days away it's uncertain just what the first-team offensive line will look like.

Left guard Todd Herremans missed Sunday morning's workout with a swollen ankle. However, left tackle Jason Peters and right guard Stacy Andrews, who opened camp on the Physically Unable To Perform List, ran with the first-team on Sunday.

Reid did not confirm whether either or both linemen would play in Thursday's preseason opener against New England.

"We'll see the closer we get here," Reid said. "Peters took a lot of work today, so I have to see how he does this afternoon and through the night how he feels."

-- By Bob Kent, 11:01 a.m., Aug. 9