Indianapolis 500
Mark Donohue, Penske Racing, Eagle 72 Offenhauser, alongside Johnny Rutherford, McLaren M16C Offenhauser. They lead Bobby Unser, All American Racers/Oscar Olson, Eagle 73 Offenhauser, and Mario Andretti, Vel Miletich, Parnelli VPJ-2 Offenhauser.