Rea enjoyed a 1.662 second margin of victory after 21 windy and competitive laps at Assen.
Sykes, who had come out on top of Superpole on Saturday morning, was in contention for the top spots in the early laps but fell after missing a gear on the approach to the final chicane on lap nine.

Rea wins again as Sykes crashes out in Assen

Rea claims victory in World Superbike opener in Assen
16/04/2016 AT 12:05

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Rea has already built a healthy championship lead of 31 points over Chaz Davies, and is yet to finish off the podium this season having recorded four wins, two second places and a third place in the seven races so far.
Race two takes place on Sunday at 1pm local time (12pm BST).

Rea claims victory in World Superbike opener in Assen


1. Jonathan Rea GBR Kawasaki Racing ZX-10R 21 lap
2. Chaz Davies GBR Racing Ducati 1199R +36.662
3. Nicky Hayden USA Honda Racing CBR1000RR +37.365
4. Leon Camier GBR MV Agusta RC F4 RR +38.542
5. Jordi Torres ESP Althea BMW S1000RR +37.922
6. Lorenzo Savadori ITA IodaRacing Aprilia RSV4 +37.460
7. Markus Reiterberger GER Althea BMW S1000RR +37.909
8. Alex Lowes GBR PATA Crescent Yamaha R1 +38.893
9. Roman Ramos ESP GO Eleven Kawasaki ZX-10R +41.910
10. Lucas Mahias FRA Pedercini Kawasaki ZX-10R +39.323
11. Josh Brookes AUS Milwaukee BMW S1000RR +38.638
12. Alex de Angelis RSM IodaRacing Aprilia RSV4 +39.322
13. Xavi Fores ESP Barni Ducati 1199R +37.741
14. Matteo Baiocco ITA VFT Ducati 1199R +39.792
15. Matthieu Lussiana FRA Team ASPI BMW S1000RR +41.485
Rea wins again to complete World Superbike double in Assen
17/04/2016 AT 12:57
Rea completes second win of weekend in Assen
17/04/2016 AT 12:48