Allen Park — The Detroit Lions can't catch a break with the team's offensive line. Days after losing guard Halapoulivaati Vaitai to a back injury, the team was down center Frank Ragnow for Thursday's practice, casting doubt on the former Pro Bowler's availability for Sunday's season opener against Philadelphia.
Ragnow popped up on Wednesday's injury report because of a groin injury, which limited his participation in the day's session. The timing suggests the injury occurred during that practice.
With Ragnow banged up, the Lions added some insurance to the practice squad, signing Ross Pierschbacher. A fifth-round pick out of Alabama in 2019, he's been active for eight games during his pro career, but logged just a single offensive snap.