PHILADELPHIA (973espn.com) — The Eagles held their lightest practice on the summer, going just 60 minutes in a 10/10/10 fashion after drawing about 40,000 for the only open training camp practice at Lincoln Financial Field Sunday night.

The biggest news was off the field but the organization said it was still evaluating promising young defensive end Joe Ostman, who was cared off at the Linc after an apparent knee injury Sunday night. The same holds true for receiver Shelton Gibson, who limped off Sunday with a leg injury but Gibson was in the locker off after the session Monday, an indication that it might not be terribly serious.

Another injury did also cropped up with running back/returner Boston Scott being listed as day-to-day with an ankle injury. Veterans Jason Kelce and Alshon Jeffery got maintenance days Monday with Isaac Semalo taking the first-team center reps and Stefen Wisniewski working on at left guard. Nate Herbig got the second-team center reps, the same setup when Kelce got his first maintenance day. Charles Johnson got some first-team reps at WR again.

With Ostman out Daeshon Hall worked with the second-team at left end as rookie Shareef Miller continued his slow ramp-up period.

Zach Brown again was working with the first-team defense at linebacker next to Nate Gerry, the second straight session that's been the makeup since Kamu Grugier-Hill went down with a Grade 3 MCL sprain. In the 4-3 base defense, L.J. Fort joined those two with the first unit.

In the defensive backfield, Sidney Jones was back in the slot Monday with Avonte Maddox working outside as Jim Schwartz continues to rotate those two on a daily basis while Rodney McLeod continues to work back into team drills at safety next to Malcolm Jenkins.

With McLeod working back in and Johnathan Cyprien now here, Andrew Sendejo got a few box-safety reps in an effort to see how versatile he can be.

The biggest controversy of the short session was the music playlist. Malcolm Jenkins put together a Grateful Dead set let and DeSean Jackson ultimately had it turned off, saying practice needed more energy.

"The Grateful Dead sounded dead," Nelson Agholor joked.

The Eagles play their first preseason game on Thursday night against Tennessee and have one more practice on Tuesday before the contest.

-John McMullen covers the Eagles and the NFL for 973espn.com. You can reach him at jmcmullen44@gmail.com or on Twitter @JFMcMullen