Shane van Gisbergen looks set to relinquish his Supercars championship lead after a series of qualifying struggles at the Australian Grand Prix.
The Kiwi flyer won a pair of poles and race victories at the season-opening Adelaide meet but hasn't threatened in qualifying at Albert Park.
He backed up fifth and seventh-placed finishes in qualifying on Thursday with 17th and 26th - last place - on Friday.
The 2016 series champion failed to set a time around the Melbourne street circuit in the final session. He will start Sunday's final race from the last row.
Van Gisbergen's struggles contrasted sharply with teammate Jamie Whincup, who won two of the four poles available.