Buffalo Bills center Eric Wood is retiring due to an unspecified but serious neck injury, ESPN reports

The 6-foot-4, 310-pound lineman was drafted by Buffalo as the 28th overall pick in the 2009 draft. Wood has started 120 games for the Bills during his nine year career. He played in just nine games in 2016, but was the only Bill to play in 100% of the team's offensive snaps in 2017, the Buffalo News reports.

Eric Wood (Photo by Tom Szczerbowski/Getty Images)

Wood, 31, has not been named as the 'injured' player by team officials and teammates, who say they've been asked by the player to not publicly identify him.

Team officials plan to hold a news conference Monday, reports say.

It is not clear why type of injury Wood suffered, or when the it occurred.