Jason Peters left practice on Wednesday with a hamstring injury. (USA Today Images)
On Wednesday, it was Jason Peters’ turn to hobble off the field, disappear into the locker room and leave much guesswork about the severity of his injury.
Relax folks, it’s just a mild hamstring tweak, the team reported after practice.
There was no further information given on Peters, the All-Pro left tackle coming back from an Achilles strain, so it’s unclear if the Eagles will practice Thursday with or without their cornerstone offensive lineman.
Matt Tobin, a 6-foot-6, 320-pound rookie free agent from Iowa, replaced Peters with the starting offensive line at practice -- an interesting promotion over second-year tackle Dennis Kelly, who started 10 games last season.
Peters had told coach Chip Kelly that his injury wasn’t serious before leaving the field, but even minor hamstring tweaks usually keep players off the field for a few days. Cornerback Cary Williams tweaked his hammy halfway into last Friday’s first full-team practice and still hasn’t returned to the lineup.
The news regarding Peters almost seemed positive given that the last two Eagles to be helped back into the locker room -- wide receiver Jeremy Maclin and linebacker Jason Phillips -- are already out for the season.
Right guard Todd Herremans (right knee) returned after missing one full practice with a right knee tweak. Danny Watkins went back to the second team.
Kelly said wide receiver Arrelious Benn is close to getting back on the field. Benn, a 2010 second-round pick acquired in an offseason trade, has been out with a hyperextended knee.
Those who remained sideline were: Williams (hammy), cornerback Brandon Hughes (hammy), wide receiver B.J. Cunningham (foot) and defensive tackle Antonio Dixon (hammy).
Catch of the day
Mike Vick had the best deep connection in 7-on-7s, but the nicest throw in 11-on-11 involved Nick Foles threading a three-man window of linebacker Mychal Kendricks and safeties David Sims and Earl Wolff to hit Jason Avant in the end zone for a red-zone touchdown.
Tackling to the ground!
Who said Chip Kelly’s camps are soft? For the first time in camp, Kelly had his players go through an Oklahoma drill that pitted an offensive player against a defender with actual tackling.
In a very narrow space, the ball carrier tries to make it past the defender to a maker. The defender’s job is to push the ball carrier back. There were several loud thuds and collisions during the session.
Pickin' on me?
Curtis Marsh was a targeted man at practice, in particular during a 7-on-7 drill in which Foles twice tried to connect with Riley Cooper on the outside with Marsh in coverage.
Marsh, the third-year corner trying to salvage his career, broke up the first pass in the end zone. On the second, Cooper had Marsh beaten by a step but twisted his body the wrong way and couldn’t reel in the well-thrown pass.
* Second-year tight end/H-Back Emil Igwenagu logged a significant number of second-team reps, the most he’s taken all camp. The hunch here is that the coaches met during the off day Tuesday and discussed giving reps to some guys and taking reps from others.
* Noticed an interesting three tight-end formation with Brent Celek as H-back, James Casey as tight end and Zach Ertz split wide. Casey is considered the pure H-back, but Kelly has talked about mixing up the roles for all three.
* Former Eagles quarterback A.J. Feeley observed practice from the sideline. Feeley played at Oregon but not when Kelly coached there. Still, he said Kelly always maintained good relations with former Ducks standouts.
* Kelly said most of the offense has been installed and all will be in place by next Friday’s preseason game against the Patriots.