The 23-year-old Glaner Honda rider led from start to finish, crossing the line with his hands in the air as he also took a 16-point advantage over Broc Parkes in the world championship standings.

After poleman Andrew Pitt had crashed out on lap 5, the battle for the runner-up slot between Yamaha World Supersport's Fabien Foret and Parkalgar Honda's Craig Jones captured most attention, with the Frenchman just getting the edge.

Foret's team-mate Parkes was fourth, with Hannspree Honda Althea Gianluca Nannelli holding off Jonathan Rea for fifth despite riding with an injured shoulder.

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Previous world championship leader Josh Brookes retired with a tyre problem.

WSS race results - top 10:

1. Lascorz
2. Foret +1.125secs
3. Jones +1.530secs
4. Parkes +10.514secs
5. Nannelli +17.492secs
6. Rea +17.602secs
7. Roccoli +19.636secs
8. Rodriguez +19.694secs
9. Walker +25.230secs
10. Aitchison +25.702secs

Gowland DNF