Sylvain Guintoli from Team Effenbert Liberty Racing riding on Ducati 1098R was first in Qualifying practice at 2012 WSBK at Assen.His fastest lap time was 1:37.600 and he had a top speed of 275.1 km.hr and 167.553 km/hr average speed.
In Second Place was Tom Sykes with fastest lap time of 1:37.630 and was behind Sylvain by 0.030 seconds.He was the fastest man on the track in terms of top speed he had 293.8 km/hr top speed and 167.481 km/hr average speed.
In Third Place was Leon Camier from Crescent Fixi Suzuki riding on Suzuki GSX-R1000 his fastest lap time was 1:38.468 he had 0.868 seconds time difference he had 273.t km/hr top speed and 166.056 km/hr average speed.
Althea Racing rider and Defending champion Carlos Checa finished in fourth place with a time difference of 1.065 seconds.He had 274.4 kms top speed and 165.724 average speed.
Finished in fifth place was Jonathan Rea from Honda world Super Bike team riding Honda CBR1000RR with a time difference of 0.208 seconds and 275.8 km/hr top speed.
Marco Melandri from BMW Motorrad Motorsport who finished in first place during free practice was in 8 th place in Qualifying race with a time difference of 1.527 seconds.
Max Biaggi from factory Aprilia racing team riding on Aprilia RSV4 Factory bike was finished in 17 th place with 2.631 seconds time difference he also had a disapointing free practice session where he finished in 17 th place.