Thomas left Saturday's preseason game against the Jaguars with a hamstring injury, Scott Petrak of the Elyria Chronicle-Telegram reports.
Several Browns cornerbacks are dealing with injuries, so Thomas took on a starting role during Saturday's preseason opener against Jacksonville. The 23-year-old played 54 percent of the team's total defensive snaps despite leaving the game early, and it's not yet clear how long his injury could keep him off the field.