Frank Ragnow briefly poked his head out of retirement last month, then disappeared back into the Minnesota winter, a severe hamstring strain the latest in a long line of injuries that brought his career to a premature end.

Ragnow made the difficult decision to retire this spring at the age of 29, and in the coming months his good friend and former linemate with the Detroit Lions , Taylor Decker, will confront some of the same questions that led Ragnow to give up his career.

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