What does the release of right guard Stephen Peterman mean for the Detroit Lions’ offensive line?

 Left tackle Jeff Backus and center Dominic Raiola each have a year left on their contracts. Backus is set to make $2.25 million plus $500,000 roster bonus. Raiola’s 2013 contract is for $4.05 million plus a $250,000 roster bonus.

 Right tackle Gosder Cherilus, who had a good season, is an unrestricted free agent, while left guard Rob Sims is signed through 2014.

 Riley Reiff, the first-round pick in 2012, is ready to step in and start at either guard or tackle, although GM Martin Mayhew sees him at tackle.

 Will Backus return for his 13th season?

 Will Cherilus, a first-round pick in 2008, be re-signed?

  Other lineman on the roster include:

— Guard Rodney Austin, who was signed as an undrafted free agent after the 2012 draft and placed on the practice squad to start the season.

— Tackle Jason Fox, a fourth-round pick in 2010, finally had an injury-free season in 2012 but played in just one game. He played in four during his rookie season. He’s a restricted free agent.

— Center Dylan Gandy, an unrestricted free agent, has been with the Lions since 2009. 

— Corey Hilliard, an unrestricted free agent, has been with the Lions for four seasons but didn’t play in a game in 2012.

— Guard Bill Nagy, who is signed through 2014, was claimed off waivers in August 2012. He was sidelined for the season after ankle surgery, but kept on injured reserve. A seventh-round pick out of Wisconsin in 2011, he can play guard or center.