Danny Watkins missed Thursday's practice with a sprained ankle, and his status for Sunday is uncertain.
"I gave him a breather today and then I'm just going to see from [trainer Rick Burkholder] how he does," coach Andy Reid said. "If I have to give him a breather tomorrow, I'll give him a breather tomorrow, and then we'll see where we go from there."
Rookie Dennis Kelly filled in during Wednesday's practice and will start if Watkins cannot play.
"I'm good with Dennis," Reid said. "Tough kid, smart."
Kelly, a fifth-round pick, never played guard in college. He played a little guard in the preseason and has been learning on the job.
"I'm getting there," Kelly said. "Naturally, I've grown into being a tackle in the two-point stance. I'm getting used to the two-point stance, and i'm trying to get to the different speed of it. It happens a lot faster -- they're right on top of you. I guess you can say I'm pretty comfortable in both."