Simon Skillicorn won Saturday's Glen Mona Horse shoe by over four minutes.
Tom Cringle, who is his nearest rival in the league this year, was second, and Ian Gale was third.
Cal Partington claimed the women's race ahead of last year's winner Rose Hooton. Bridget Kaneen was third.
Glover - Southern 100 sidecar suspension felt 'completely inevitable'
Former commentator believes work to help class needs to start soon
Football: Freddie O'Donoghue released by Carlisle United
Manxman had been with Cumbrian club since 2023
Southern 100 sidecar exclusion 'absolutely devastating'
Competitors react to class's removal from Billown Course for 2026
No racing to take place today
Clerk of the Course confirms Superstock 1 race has been cancelled for 2026
Athletics: Island trio impresses on world race walking stage
Young competitors represent England in Madrid