The game against Washington is on Aug. 18.
The Browns selected Manziel, a former Heisman Trophy winner out of Texas A&M, with the No. 22 pick in this year's draft. Though Manziel is listed as the second-string QB on Cleveland's first unofficial depth chart, he has been taking some training camp reps with the starters.
Pettine has said he plans to choose his regular season starter by the team's third preseason game, against St. Louis on Aug. 23. Pittsburgh Steelers defensive coordinator Dick LaBeau said he expects Manziel to be the starter when the two teams open the regular season on Sept. 7.
- Alex Hampl