In perhaps the most unexpected move of their offseason, the Baltimore Ravens re-signed underachieving offensive lineman Jah Reid to a one-year deal Thursday.

The Ravens invested a 2011 third-round pick in Reid as well as $2.6 million over four years. All they received in return was seven starts.

The re-signing of Reid provides insurance if starting right tackle Rick Wagner has any setbacks with a foot injury that ended his season. Coach John Harbaugh said he expects Wagner to be ready for training camp. If Wagner has a slower-than-expected recovery, James Hurst would start at right tackle and Reid would become the primary backup.

It's still surprising that the Ravens couldn't find someone better and more dependable than Reid, and it's surprising that Reid didn't want a fresh start after a forgettable season. He avoided trial on two misdemeanor counts of battery for a bar fight after being accepted into a diversion program Friday in Key West, Florida, then lost the No. 3 tackle spot to an undrafted rookie in Hurst.

Reid played a career-low four games and 10 offensive snaps in 2014. He was inactive for nine games.

There are no guarantees that Reid makes the Ravens this year, especially with Baltimore returning its top seven offensive lineman from last season. If Wagner is ready by the start of camp and the Ravens draft a lineman, Reid will probably need a strong preseason to play for the Ravens for a fifth straight year.