Colin Turkington has lost his Snetterton race one victory after being excluded for running underweight.
The Team RAC driver's BMW 320si was found to be two kilograms underweight and he will now have to start race two from the back of the grid, but still carrying the winner's success ballast.
"We've been weighed on our own scales here, before the race, and it was fine," Turkington said.
"I'll start race two from the pit lane. It compromises the weekend - it'll be hard to get much out of it."
Turkington's exclusion means that Team Dynamics' Gordon Shedden takes the win, with Tom Onslow-Cole second and Tom Chilton third.
"I do feel for him," said Shedden. "That's not the driver's fault, he's not shoved anyone off or anything. But it's good news for us."
Classified: Pos Driver Car Time 1. Gordon Shedden Honda 22:05.923 2. Tom Onslow-Cole BMW + 0.809 3. Tom Chilton Vauxhall + 1.211 4. Mat Jackson BMW + 1.910 5. Fabrizio Giovanardi Vauxhall + 3.600 6. Darren Turner SEAT + 13.68 7. Mike Jordan Honda + 13.907 8. Jason Plato SEAT + 14.276 9. Tom Ferrier SEAT + 23.063 10. Jason Hughes MG + 23.387 11. Erkut Kizilirmak Vauxhall + 35.983 12. Matt Allison SEAT + 36.214 13. John George Honda + 43.952 14. Richard Marsh Alfa Romeo + 46.968 15. Martyn Bell BMW + 47.163 16. Simon Blanckley Honda + 47.518 17. Fiona Leggate MG + 49.727 18. Matt Neal Honda + 1 lap Not classified: Driver Car Laps Colin Turkington BMW DSQ Eoin Murray Alfa Romeo 15 David Pinkney Alfa Romeo 7 Chris Stockton Lexus 2