Dobbins was helped off the field after suffering an apparent left leg/knee injury during the first quarter of Saturday's preseason game against Washington, Jamison Hensley of ESPN.com reports.
Dobbins stayed down on the field at the end of a two-yard gain on a screen pass. He limped off with his arms around trainers after a couple minutes and presumably will be held out for the rest of the game. With Justice Hill (undisclosed) already out, the remaining Baltimore RBs are Gus Edwards, Ty'Son Williams and Nate McCrary.