Lamb, who was ruled out to start the second half, was limited to six plays on Sunday in Chicago. Lamb said afterward that he 'absolutely' believes he can play when Dallas (1-2) hosts the Green Bay Packers (2-1) next Sunday night. Sewell landed on Lamb's left knee and ankle on the play with 8:39 remaining in the first quarter. Trainers ushered him to the blue medical tent but Lamb stayed in the bench area. The Cowboys medical staff had seen enough, Lamb said, and his day was over.