Conor Daly scored a lights-to-flag victory at Valencia to head home an ART Grand Prix one-two in GP3 on Sunday morning.
The American resisted the early challenge from his team-mate Facu Regalia to record a 1.2 second victory.
Stewards are reviewing his post-victory celebrations, however, for "driving the wrong direction after the chequered flag".
Koiranen GP's Kevin Korjus finished third after front row starter Daniil Kvyat (MW Arden) ran wide at Turn 4 on the opening lap, losing his second place. He rejoined in fourth, and chased Korjus to the end, missing out by just 0.3s.
Arden's Carlos Sainz Jr finished fifth from eighth on the grid, with points leader Tio Ellinas in sixth for Manor.
Aaro Vainio lost ground off the startline, slipping from fourth to seventh.
Robert Visoiu grabbed the coveted eighth spot, and reversed-grid pole position, from Dino Zamaparelli with five laps remaining. Zamparelli and fellow Brit Jack Harvey rounded out the top 10.
Results - 18 laps:
Pos Driver Team Time/Gap 1. Conor Daly ART 25m54.812s 2. Facu Regalia ART + 1.210s 3. Kevin Korjus Koiranen + 3.401s 4. Daniil Kyvat MW Arden + 3.773s 5. Carlos Sainz MW Arden + 4.413s 6. Tio Ellinas Manor + 6.196s 7. Aaro Vainio Koiranen + 9.084s 8. Robert Visoiu MW Arden + 13.504s 9. Dino Zamparelli Manor + 14.145s 10. Jack Harvey ART + 14.547s 11. Melville McKee Bamboo + 20.883s 12. Nick Yelloly Carlin + 20.965s 13. Patric Niederhauser Jenzer + 21.342s 14. Alex Fontana Jenzer + 21.626s 15. Giovanni Venturini Trident + 21.927s 16. Emanuele Zonzini Trident + 22.070s 17. Josh Webster Status + 26.458s 18. Jimmy Eriksson Status + 26.978s 19. Lewis Williamson Bamboo + 27.387s 20. Ryan Cullen Manor + 36.843s 21. Patrick Kujala Koiranen + 46.218s Retirements Luis Sa Silva Carlin 2 laps Samin Gomez Jenzer 1 lap David Fumanelli Trident 0 laps Adderly Fong Status 0 laps Eric Lichtenstein Carlin 0 laps Carmen Jorda Bamboo 0 laps