The Eagles, who host the Carolina Panthers on Thursday, are slated to practice in pads on Monday and Tuesday.
Several starters returned to practice on Sunday. Running back LeSean McCoy, who missed most of last week with a knee injury, practiced, as did cornerback Cary Williams, who has been sidelined for most of training camp with a hamstring injury.
"We'll be interested in his recovery this afternoon, how he feels," Kelly said of Williams. "If we can get a couple days of practice in, we really need to get him out on the field."
Defensive tackle Antonio Dixon (hamstring) also returned to practice.
The Eagles signed long snapper James Winchester, an undrafted rookie out of Oklahoma, to fill in for Jon Dorenbos, who suffered a concussion Friday night. The Eagles are hoping that Dorenbos will be cleared to play in time for the Panthers.
"He's fine," Kelly said. "But there is a protocol that you have to go through."
Also sitting out practice with injuries were running back Bryce Brown (quadriceps), linebacker Phillip Hunt (knee), linebacker Casey Matthews (knee), wide receiver Damaris Johnson (hamstring), tackle Ed Wang (knee), and tackle Dennis Kelly (knee).
Lane Johnson praised
Offensive tackle Lane Johnson was absent from Sunday's practice because his wife gave birth on Saturday. The Eagles were missing four offensive tackles.
Johnson, the team's first-round pick, started at right tackle in Friday's game and impressed the coaching staff.
"I thought Lane did a really nice job, especially in the first game," Kelly said. "He may have been our most consistent offensive lineman the way Coach graded out. He knew exactly what he was doing. Didn't have any mental errors, plays with great effort."
Kelly noted that Johnson didn't look like a rookie in the game. The two other rookies who stood out, according to to Kelly, were defensive linemen Bennie Logan and Damion Square.
Harbor at WR
With a shortage of wide receivers, the Eagles used tight end Clay Harbor on the outside during Sunday's practice. Harbor is the No. 4 tight end out of a group of seven players, and Kelly said he's the fastest of the group. That's why the team wants to see him on the outside, at least until rosters are trimmed and more capable receivers hit the market.
"We believe he knows how to play inside and understands a lot of route concepts," Kelly said. "So it's a matter of the more versatile you can be, the better impact you can make. He's a big body. He's physical. Not worried about him blocking corners, and he's the one tight end we have that's got really, really good speed."
The team experimented with Harbor at linebacker during some plays in the spring for roster versatility. Jason Avant also took snaps at defensive back. That hasn't happened in camp yet, but it could again when rosters are reduced. Kelly said it would not be for an exclusive change but for situations such as Dorenbos' injury on Friday, when the Eagles were forced to use Brent Celek at long snapper.
"We're trying to maximize our roster," Kelly said. "They're two athletic guys that felt they could make that transition."
Kelly was asked about his relationship with McCoy, who is often seen interacting with him at practice. "He's a little bit more Chuckles the Clown than I am," Kelly joked. . . . Sunday's workout was the third of five open practices at Lincoln Financial Field and 28,000 fans attended, according to the team.
Click here for complete coverage of Philadelphia Eagles training camp.