Frank Ragnow’s sudden retirement has transformed the Detroit Lions’ offensive line landscape overnight. What was once considered among the NFL’s elite units now faces a “giant question mark” heading into the 2025 season.

In the wake of Ragnow's retirement, veteran Graham Glasgow and rookie Tate Ratledge, whom the Lions drafted in the second round in April's draft, have been taking reps at center at the team's OTAs. Whichever player takes over the starting job will have big shoes to fill.

Detroit Lions center Frank Ragnow is retiring after seven seasons in the NFL. Ragnow, 29, announced his decision in an Instagram post Monday, and he cited his future health as the primary reason.