Getty Images

Running back Trent Richardson signed with the Ravens this offseason in an effort to resuscitate a career that started going off the rails shortly after Richardson was the third overall pick of the 2012 draft.

His effort to get things moving in the right direction can’t hit too many snags if it is going to continue into the regular season. It’s already hit a snag, however.

Coach John Harbaugh said Thursday that Richardson has not been participating in OTA practices because of a hamstring injury he suffered last week. There’s no word on when the Ravens might expect to get Richardson back on the field, but any amount of missed time is going to work against Richardson’s chances to impress coaches enough to keep him on the roster.

Justin Forsett is at the top of the depth chart at running back in Baltimore with Buck Allen, Terrance West, Lorenzo Taliaferro and fourth-round pick Kenneth Dixon also on hand.