Lions coach Dan Campbell brought up how the Saints successfully replaced a retiring Pro Bowl C during his time there for Detroit to replace Ragnow

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.

The Frank Ragnow era in the Motor City has come to an end. Ragnow, who missed the Detroit Lions’ first phase of OTAs this spring, officially announced his retirement Monday. The No. 20 overall pick in the 2018 NFL Draft played his entire seven-year professional career in Detroit.