On July 3, 1972, Donohue] suffered injuries to his left knee and thigh in a Can-Am testing crash at Road Atlanta.

[4] Monday's practice attracted more top drivers with Johnny Rutherford posting the fastest speed at 188.742 mph, followed by Mario Andretti and Joe Leonard.

Mike Hiss suffered a minor back abrasion when he crashed into the wall with the rear of his Penske-prepared McLaren.

A special qualifying session was held for Peter Revson and George Follmer who planned to compete in the Can-Am Series race at Road America.

Rules stated that Revson would not be eligible for the pole because his run came on Friday, but he would be able to start as high as second depending on his speed.

Jerry Grant became the first IndyCar driver to break the 200 mile per hour barrier when he ran a lap with a speed of 201.414 mph.

Revson's McLaren teammate, Gordon Johncock completed the front row with an average speed of 194.041 mph.

[9] Pole-favorite Bobby Unser suffered a series of engine problems that delayed his qualifying attempt.

[11] Hoping to avoid continued bad luck, Unser carrier a horseshoe, a chicken wishbone, and a tiny olive branch with him on his run.

Bill Simpson, Dick Simon, Jim McElreath, and Greg Weld were bumped from the field.

[13] On the pace lap, pole-sitter Jerry Grant suffered engine failure and retired from the race.

[14] The pole position was left vacant and put Peter Revson in control of the start with teammate Gordon Johncock alongside.

With five laps remaining, the second-place car of Mike Mosley suffered a broken transmission and retired from the race.

McCluskey was driving the same McLaren chassis that Peter Revson used to win the pole and finish second in the 1971 Indianapolis 500.