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Eagles Injury Update: Zach Ertz (hamstring) limited

Tight end Zach Ertz, who's been having a Pro Bowl season, showed up on the Eagles' injury report Thursday, and his status for Sunday's Eagles-Broncos game is unknown.

Ertz was added to the injury list with a hamstring injury and was listed as limited, which could mean he either participated in some drills throughout practice or that he started practice but was unable to finish.

"I think I'll be OK, but I'm not sure," Ertz said in a brief interview at his locker. "We'll see. Right now, I just don't know."

Ertz ranks eighth in the NFL among all players with 43 receptions, 10th with 528 yards and tied for second with six touchdowns. 

If Ertz is unable to play, the Eagles would go with veteran Brent Celek and former undrafted free agent Trey Burton. 

Celek has just four catches for 33 yards this year but during the five-year span from 2009 through 2013 had the sixth-most receiving yards in the NFL among tight ends with 3,479. 

Burton, who caught 37 passes for 327 yards last year, has just nine catches for 70 yards this year with a TD against the Cardinals.

Cornerback Ronald Darby, who hasn't played since hurting his ankle on opening day in Washington, remains limited in practice.

Listed as full participants and expected to be available to play were defensive tackle Beau Allen (foot), punt returner and running back Kenjon Barner (hamstring), defensive end Brandon Graham (shoulder), cornerback Patrick Robinson (concussion) and offensive tackle Halapoulivaati Vaitai (hip).

The Eagles, 7-1, look for their seventh consecutive win Sunday when they face the Broncos at 1 p.m. at the Linc.