This article was originally published on www.si.com/nfl/eagles as Eagles Training Camp Observations Day 8: Backup Defenders Shine. PHILADELPHIA - The Eagles returned to the practice field Sunday morning for an hour and 40-minute “yellow” session in shells. The highlight of the practice came late with “the game on the line” in a hurry-up period.

Stupid Observation of the Day: During Sunday’s practice, the Eagles played Jhoan Duran’s intro song “El Incomprendido” and I half expected it to go dark at the NovaCare Complex like it did at Citizens Bank Park on Friday night.

With Day 8 of practices now complete, we're looking at key takeaways and observations from the NovaCare Complex.