The injury bug continues to bite the Eagles starting defensive line- so much so that there isn't any of it left.

With Jason Babin, Trent Cole, and Mike Patterson already out with various injuries, Cullen Jenkins left practice Wednesday with a hamstring injury.

The Eagles best defensive tackle last season, Jenkins is set to have an MRI Wednesday night. The severity of the injury is not yet known.

Now that Jenkins is hurt, it's all but certain that none of the Eagles starters on defensive line will be at practice on Thursday.

With all 4 starters out, the reps will go to the backups- Brandon Graham, Derek Landri, Fletcher Cox, and Darryl Tapp.

The good news is that barring a bad result from Jenkins MRI, the Eagles should have back at least 3 of the starters back by Week 1. The timeline for Patterson is still unknown, but it would be surprising to see him on the field in Cleveland.

While it is not a line that the Eagles would want to start for an entire season, the Eagles group of backups is not a complete disaster. Graham and Landri have both had great camps so far, and Tapp is a solid veteran player. Cox is still learning, but he has shown flashes at camp so far of how his big body is able to collapse the pocket around the quarterback.

Regardless of what the MRI shows, Andy Reid and Jim Washburn would be smart to let their defensive line starters sit out as long as they need it during the preseason. They are all veteran players and will benefit more from resting than they will getting meaningless reps in preseason games.

Follow Eliot Shorr-Parks on Twitter at @EliotShorrParks