The Detroit Lions held their first practice of training camp on Sunday and there was plenty of news coming from it. Here are the biggest takeaways, including news about positional battles, injuries and more.

With Taylor Decker on the PUP list as he recovers from what head coach Dan Campbell termed a "clean-up" on his shoulder, veteran Dan Skipper took the first-team reps at left tackle. Jamarco Jones was the second-team LT, followed by Giovanni Manu.

Ennis Rakestraw Jr., a second-year cornerback, exited Detroit Lions practice Sunday in Allen Park and is being evaluated for a chest injury.