Enaam Ahmed rose to the challenge of Toyota Racing Series leader Richard Verschoor to take a first category win in race two at Hampton Downs.
Ahmed started on the front row of the reverse grid alongside Ameya Vaidyanathan, and got the better of the Indian off the start.
Verschoor started third and also got ahead of Vaidyanathan on the first lap, and set about cutting the gap to Giles Motorsport team-mate Ahmed.
The Briton was able to respond however in the latter part of the race, and finished up 2.4 seconds clear at the end of the 15 laps, run entirely under green flag conditions.
Pedro Piquet took third ahead of race one winner Marcus Armstrong, while Vaidyanathan finished fifth.
Kami Laliberte got sixth in front of Thomas Randle and Jehan Daruvala, who recovered from 14th on the grid, with Taylor Cockerton and Ferdinand Habsburg completing the top 10.