Kawasaki’s Jonathan Rea extended his WorldSBK series lead over Toprak Razgatlioglu as the Yamaha man was wiped out at Assen’s first corner by errant stablemate Garrett Gerloff.
Gerloff got his braking all sorts of wrong into Haarbocht as he came from mid-grid but only succeeded in removing Razgatlioglu from proceedings.
Rea had to take avoiding action and slipped back to ninth but then scythed his way through for the win while Gerloff was punished with a ride-through penalty but then crashed out trying to make up places.
With Rea’s main championship contender out of contention, the race leader was a surprise package in the first laps - Andrea Locatelli (Pata Yamaha).
Rea slowly clawed back time to him, having made a rear tyre choice change from softer to harder from Saturday to Sunday, and eventually Scott Redding (Aruba.it Racing – Ducati) overhauled the slowing Michael Ruben Rinaldi (Aruba.it Racing – Ducati), who had opted for an X rear tyre.
Redding would, like Rea, catch and pass Locatelli at the end with the 1-2-3 after all 21 dry laps reading Rea, Redding and Locatelli.
Fast starting Alex Lowes (Kawasaki Racing Team) got overhauled by Chaz Davies (Team GoEleven Ducati) who then hunted down Rinaldi for fourth place at De Strubben on lap 10 of 12.
A plucky fight from Alvaro Bautista (HRC Honda) saw him finish fifth to save his no-scoring weekend, in some regards.
Lowes would fade to finish seventh as Michael van der Mark (BMW Motorrad WorldSBK Team) transformed his early fortunes to enter the top six, heading of Lowes and Rinaldi, who had pushed his X rear tyre too hard in the early laps.
Ninth was Ducati privateer Axel Bassani (MotoCorsa Racing Ducati) and tenth Leon Haslam (HRC Honda).
In the championship standings, Rea has 243 points, Razgatlioglu an unchanged 206, Redding 162 and Lowes 127.
