FIM Superbike World Championship Assen, Netherlands April 15 Free Practice One Results (all on Pirelli tires): 1. Jakub SMRZ, Czech Republic (Ducati 1098R), 1:37.159 2. Carlos CHECA, Spain (Ducati 1098R), 1:37.199 3. Jonathan REA, Great Britain (Honda CBR1000RR), 1:37.343 4. Noriyuki HAGA, Japan (Aprilia RSV4 Factory), 1:37.541 5. Troy CORSER, Australia (BMW S1000RR), 1:37.582 6. Leon HASLAM, Great Britain (BMW S1000RR), 1:37.606 7. Max BIAGGI, Italy (Aprilia RSV4 Factory), 1:37.616 8. Eugene LAVERTY, Ireland (Yamaha YZF-R1), 1:37.865 9. Marco MELANDRI, Italy (Yamaha YZF-R1), 1:37.900 10. Ruben XAUS, Spain (Honda CBR1000RR), 1:38.027 11. Leon CAMIER, Great Britain (Aprilia RSV4 Factory), 1:38.088 12. Ayrton BADOVINI, Italy (BMW S1000RR), 1:38.090 13. Joan LASCORZ, Spain (Kawasaki ZX-10R), 1:38.144 14. Barry VENEMAN, Netherlands (BMW S1000RR), 1:38.190 15. Tom SYKES, Great Britain (Kawasaki ZX-10R), 1:38.196 16. Michel FABRIZIO, Italy (Suzuki GSX-R1000), 1:38.365 17. Sylvain GUINTOLI, France (Ducati 1098R), 1:38.870 18. Maxime BERGER, France (Ducati 1098R), 1:39.047 19. Chris VERMEULEN, Australia (Kawasaki ZX-10R), 1:39.432 20. Roberto ROLFO, Italy (Kawasaki ZX-10R), 1:39.932 21. Mark AITCHISON, Australia (Kawasaki ZX-10R), 1:39.980