Defending series champion Shane van Gisbergen helped Red Bull Holden Racing teammate Jamie Whincup to win Sunday's race at the Sydney SuperSprint.
With a lead late in the race but on older tyres van Gisbergen and his team opted to release his teammate and ensure the slightly faster Whincup could avoid being caught by chasing cars on fresher tyres.
The selfless act cost the Kiwi any chance of win - although the chasers were clearly going to catch him - but it meant Whincup could record his record 106th career race win and surpass Craig Lowndes at the top of the wins list. It also brought the six-time champion to within 12 points of championship leader Scott McLaughlin.
Saturday race winner Fabian Coulthard finished second, passing van Gisbergen with a couple of laps to go while McLaughlin took fourth having started from pole.
Earlier McLaughlin recorded his 13th pole position of the season to equal the record for most in a season but he botched the start and dropped to fifth by the end of the first lap.