sentences:  Gordon Johncock remained in third, 782 points back, Johnny Rutherford stayed in fourth, 1307 points back, and Al Unser rose to fifth in points, 1450 points behind.Rick Mears qualified on the pole, followed by Al Unser, Bobby Unser, Mario Andretti, in a one-off appearance for Penske, and Tom Sneva.In the race, Al Unser led most of the first half of the race, but lost three laps due to a broken front-spoiler bracket.