McCown, who started the game, has completed 16-for-20 passes for 137 yards. He found Dane Sanzenbacher for a 30-yard touchdown with 6:15 left in the first quarter, then gave the Bears a 14-0 lead with an 11-yard touchdown pass to Armando Allen with 4:19 to go in the second quarter.
The Browns got on the board when Seneca Wallace led Cleveland on an 80-yard drive, capped by a 2-yard touchdown pass to Rod Windsor with :41 seconds remaining in the first half. Wallace also had a 20-yard run on that drive.
Chicago's defense has one sack and an interception. The Browns have rushed for 95 yards in the first half.