Browns running back Peyton Hillis has an injured left hamstring, and coach Pat Shurmur does not know how long he will be sidelined. Hillis was injured in the first quarter of Sunday's 24-17 loss at Oakland. On Monday, Hillis underwent an MRI, which revealed the injury. Because of a miscommunication, the runner's injury was not reported by the Browns until the second half Sunday, leading to speculation he was being benched by Shurmur.