Detroit Lions starting center Frank Ragnow reportedly avoided a significant injury during Friday's preseason loss to the Buffalo Bills.
According to NFL Network's Ian Rapoport, Ragnow suffered a "minor" ankle sprain, which forced him to leave the game. Ragnow was helped off the field and couldn't put any weight on his right ankle.
With Ragnow out, starting right guard Graham Glasgow kicked inside and played center until the first-team offense left the game.
This article will be updated to provide more information on this story as it becomes available.