Previously: Quarterback, Running Back, Wide Receiver, Tight End, Offensive Tackle, Offensive Guard

Under contract: Dominic Raiola (through 2013), Dylan Gandy (through 2012), Dan Gerberry (futures deal)

Free agents: None

Like at the other positions on the offensive line, the Detroit Lions are expected to have the same starter at center in 2012 as they did last season. Dominic Raiola has two years left on his contract, and the Lions don't exactly seem to be in a hurry to replace him. He has lots of experience, and there are no better options currently on the roster. While that could change after the NFL Draft, for now Raiola is set to be back again as the starter.

The other centers on the roster right now are Dylan Gandy and Dan Gerberry. Gandy is a versatile offensive lineman, as he can play either center or guard. His versatility is a big reason why the Lions have kept him around. He provides depth at multiple positions and is a solid backup to have on the team.

Gerberry has been trying to beat out Gandy for a spot on the roster the last few years. Instead, he has spent most of his time with the Lions on the practice squad. He is no longer eligible for the practice squad, so if he wants to stay with the Lions this year, he will have to earn a spot on the 53-man roster.

Need going forward?

The general theme of the offensive line is that the Lions could use more depth and more talent, and that is also true at center. Might we see Detroit decide to make an upgrade at center in the draft? It's certainly possible with guys like Peter Konz and David Molk being talked about as potential picks. If they don't decide to draft a center with the intention of replacing Raiola (either this year or down the road), then expect an undrafted free agent or a regular free agent to be brought in to compete for a spot on the team during training camp.