Lions

Will Ryan Jensen or Matt Skura replace the retired John Urschel in Baltimore? Will Ben Garland, Wes Schweitzer or Sean Harlow be protecting Matt Ryan in Atlanta? Keep a close eye on these offensive-line position battles in NFL training camps.

The Detroit Lions need to shore up their secondary, which allowed a league-high 72.7% of passes to be completed last season. Plus, look for quarterback Matthew Stafford to keep playing more and more like Peyton Manning—at least in the presnap phase