 Chicago quarterback Jim McMahon scored on a 16-yard touchdown run in the first quarter, and later threw a 22-yard touchdown pass to Willie Gault in the third quarter.Kicker Kevin Butler kicked a 34-yard field goal in the first period.In the fourth quarter, defensive lineman Richard Dent forced Brock to fumble, and linebacker Wilber Marshall picked up the loose ball and returned it 52 yards for a touchdown.