Currently, veteran Graham Glasgow appears to be the top option given his experience playing the position in spot duty when Ragnow was out with injury. Over the last two seasons, G

Frank Ragnow’s seven seasons with the Lions ran the gamut of highs and lows. A first-round pick turned four-time Pro Bowl er and three-time Second-Team All-Pro, he was also part of two NFC North championship teams.

For the first time since Detroit Lions center Frank Ragnow announced his retirement at 29, coach Dan Campbell spoke with the media. Campbell spoke glowingly of Ragnow's contributions to the team and revealed the decision didn't exactly catch the team off guard.