Glenn Irwin is quick off the mark and gets himself in front, with James Hillier also moving past Peter Hickman into second.
Irwin looks briefly as if he might streak away from his rivals, a la last year's Superbike races, but Hillier reels him in with the help of a wonderful slipstream and it's tight at the top again.
Hickman runs inside Irwin to regain top spot and briefly finds himself in the dirt but maintains his position.
It's Hickman, Irwin, Harrison and Hillier in that order as they finish the first lap. All within one second.