Fabian Coulthard claimed his first Supercars victory in 11 months, beating Shell V-Power Racing team-mate Scott McLaughlin in the second leg of the WD-40 Phillip Island SuperSprint.
The DJR Team Penske Mustangs were the class of the field, Coulthard jumping polesitter and early leader McLaughlin during the first pitstops.
He remained ahead during the second round, and managed the race from there, crossing the line 0.6793 seconds ahead.
Todd Hazelwood was spun out of seventh at Turn 6 on the opening lap by James Courtney.
Stewards handed Courtney a 15-second penalty, and his day got worse with a pair of right-front tyre failures, finishing last and two laps down.
Hazelwood fell behind the back of the pack after the spin, ultimately recovering to 16th.