What happened: Dan Campbell attributed the absence to a wrist injury. Mays joined Detroit this offseason after four seasons with Carolina.
Why it matters: Detroit targeted Mays to upgrade an offensive line that struggled last season. Questions at left guard now leave the Lions with added uncertainty across the interior.
By the numbers: Mays started 20 games at center over the past two seasons in Carolina; $14 million of his Detroit contract is guaranteed.
What to watch: Detroit's preseason rotations will show how the club reshuffles its interior before the 2026 season.