Former Miami Dolphins and San Francisco 49ers offensive lineman Jonathan Martin is calling it a career, according to Ian Rapoport of the NFL Network. Martin has a back injury that would require surgery and likely sideline him next season anyway, so he's electing to retire instead.
Martin was drafted in the second round of the 2012 NFL Draft by the Dolphins and played in all 16 games in his rookie season. His time with the Dolphins was short-lived, however, as the 2013 campaign was derailed in a bullying scandal involving Richie Incognito. Martin had been slotted in as the starting left tackle, but he left the team in October, citing "emotional" reasons.
Eventually, it came out that Incognito was the "ring leader" in the harassment of Martin, going back to his rookie year with the team. Incognito, Mike Pouncey and John Jerry were all named in a 144-page report by Ted Wells outlining the pattern of bullying. Both Martin and Incognito eventually left the Dolphins, with Martin being traded to the 49ers.
Martin wound up being the backup swing tackle and started multiple games with Anthony Davis missing time due to injury. He had an average season in that role then was waived by the team in March. The Carolina Panthers claimed Martin off of waivers, but he won't play a snap for them now that he's elected to call it a career. Incognito is still in the league, and is set to play for the Buffalo Bills in 2015.
SB Nation video archives: The NFL's hazing problem (2013)