Lawrence suffered an ankle injury in Sunday's 33-30 overtime loss to the Cardinals, Patrik Walker of the Cowboys' official site reports.
Coach Brian Schottenheimer said the first-round rookie could miss some time with the injury. Across eight games this season, Lawrence has posted 13 tackles (six solo), including 1.0 sacks, and a pair of bass breakups on 41 percent of Dallas' defensive snaps.