Former Stanford and 49ers offensive lineman Jonathan Martin has decided to retire following a recent back injury, according to multiple reports.
Martin, 25, who was expecting to compete for a spot on the Carolina Panthers this summer, sustained an injury during a recent workout. He was told he could not have any activity for at least six weeks, FoxSports reported.
Martin becomes the fifth player from the 2014 49ers to retire this offseason, joining Patrick Willis, Chris Borland, Justin Smith and Anthony Davis.
The 49ers waived Martin on March 26 after he started nine games last season at right tackle in place of Anthony Davis. On June 5, Davis announced his retirement, saying he was stepping away for “a year or so” to allow his “body and brain a chance to heal.”
The 49ers acquired Martin in March 2014 in a trade with the Miami Dolphins for a seventh-round draft pick. Martin played college ball at Stanford under Jim Harbaugh. The Dolphins selected Martin in the second round of the 2012 NFL draft with the No. 42 overall selection.
Martin left the Dolphins midway through his second NFL season amid allegations of bullying from teammate Richie Incognito. In the Wells report, Harbaugh was quoted as saying he never doubted Martin’s “tenacity, work ethic and dedication to the game.”