Backup Seattle Seahawks running back Robert Turbin underwent offseason hip surgery, but is expected back in time for the start of the 2015 regular season. The team confirmed Turbin underwent the surgery on Thursday but did not detail what was repaired or a recovery timeline. Turbin is entering the final year of his rookie contract with the Seahawks and has been the main backup for Marshawn Lynch since being drafted in 2012. Turbin has made three starts, all last season, and has rushed for 928 total yards. More...