Richard Cooper was back on the top step of the podium after beating Harrison Dessoy in a delayed race at Knockhill.
Cooper had been leading when the race was stopped due to a huge downpour and delayed by almost two hours.
However, at the restart, he picked up where he left off and swept to a dominant win, beating Dessoy by more than eight seconds.
Ash Barnes finished third, with Edoardo Colombi fourth and Aaron Silvester fifth.
Pirelli National Sportbike with Moneybarn Vehicle Finance, Race One:
1. Richard Cooper (PHR Performance Triumph)
2. Harrison Dessoy (Rev2Race Yamaha) +8.578s
3. Ash Barnes (Raceways Yamaha) +14.956s
4. Edoardo Colombi (Gradara Corse Asd) +16.955s
5. Aaron Silvester (MIH Solutions/Macadam Racing) +17.284s