Ford star Mark Winterbottom has extended his V8 Supercars winning streak to four races with back-to-back successes at Queensland Raceway.
The Prodrive Racing Australia driver held off championship rival Craig Lowndes in the second of two 20-lap races to extend his lead in the title standings.
Winterbottom had earlier dominated the first race of the day, snatching the lead off the line from teammate Chaz Mostert before streaking away to victory.
It means the 2013 Bathurst winner has now won eight of the past 13 races as he closes in on a maiden V8s title.
Lowndes, who snatched third on the final lap of the opening race, finished second to ensure he maintains second place in the standings.
Volvo’s Scott McLaughlin secured his first podium of the year by finishing second in the opening race, while Mostert finished third ahead of teammate David Reynolds in the second race.
Defending champion Jamie Whincup now looks almost certain to relinquish his crown after finishing ninth and fifth in the two races.
The Ipswich SuperSprint event wraps up on Sunday with a single 200km race.