Projecting the Lions depth chart: Offensive guard/center

As the offseason winds down, we're going to project each position on the Detroit Lions depth chart and also take a look at some training camp battles. Next up are the offensive guard and center positions.

Starters: Rob Sims (LG), Dominic Raiola (C), Larry Warford (RG)

All three of the Lions' interior starters on the offensive line are back from last year. Rob Sims is back as the starting left guard, Dominic Raiola has returned after a stellar 2013 season and Larry Warford will look to follow up an outstanding rookie year with another strong performance in 2014.

Top backups: Travis Swanson, Rodney Austin

At least on paper, the Lions' two backup spots already appear to be basically set for offensive guard and center. We know that third-round pick Travis Swanson is going to make the team, as the Lions are planning to groom him to eventually replace Raiola. Austin seems like the favorite for the other backup spot after finally being promoted to the 53-man roster late last season.

Other players: Garrett Reynolds, Darren Keyton, Alex Bullard, A.J. Dalton

The only intrigue with the Lions' other interior linemen is that veteran Garrett Reynolds just joined the team last week. Reynolds has started 23 games over the last three seasons, and he could push Austin for that final backup spot. I think Reynolds is insurance more than anything, but he's definitely got a better chance of making the team than the other guys toward the bottom of the depth chart.

Camp battle to watch: Rodney Austin vs. Garrett Reynolds

With the starters and one backup already set, only one interior spot is actually up for grabs. As mentioned, Austin seems like the favorite to take the final backup spot considering the Lions have been developing him for a couple years now. However, if he fails to show improvement during training camp and the Lions like the veteran experience that Reynolds brings to the table, it's possible that Austin could be on the outside looking in yet again. This position battle didn't even exist a week ago, but there is some intrigue here now with Reynolds joining the team just in time for training camp.

Previously: Quarterback, running back, fullback, wide receiver, tight end, offensive tackle