It was Frenchman Baz's maiden win in the class, while Italians Michael Fabrizio and Andrea Badovini of BMW Motorrad Italia completed the podium
The start was halted due to two separate crashes then the restart was declared a wet race, despite many sections of the circuit appearing to be dry.
There was light rain on occasion which saw the lead change hands many times before it became constant and heavier late in the 18-lap race.
Baz won by 0.3 seconds before crashing immediately, while home rider Jonathan Rea of Honda also crashed into Badovini after crossing the line for fourth.
Championship leader Max Biaggi crashed late on to retire from the race while Marco Melandri and Tom Sykes, second and third in the standings, finished seventh and eighth.
In race two the retuning Sylvain Guintoli took the spoils in a truncated race worth half the points. The Frenchman, now riding for PATA Ducati, took an early lead and held his nerve as the conditions deteriorated.
The red flag came out on lap 10 of 17, and the results back-counted two laps. That meant that Baz, who had just crashed, kept his second place, with Smrz placing third.
Results
Race one
1 L. BAZ FRA Kawasaki Racing Team Kawasaki ZX-10R 2'07.895
2 M. FABRIZIO ITA BMW Motorrad Italia GoldBet BMW S1000 RR 0.383
3 A. BADOVINI ITA BMW Motorrad Italia GoldBet BMW S1000 RR 0.459
4 J. REA GBR Honda World Superbike Team Honda CBR1000RR 0.539
5 C. CHECA ESP Althea Racing Ducati 1098R 1.012
6 L. HASLAM GBR BMW Motorrad Motorsport BMW S1000 RR 2.619
7 M. MELANDRI ITA BMW Motorrad Motorsport BMW S1000 RR 6.123
8 T. SYKES GBR Kawasaki Racing Team Kawasaki ZX-10R 9.170
9 D. GIUGLIANO ITA Althea Racing Ducati 1098R 19.022
10 E. LAVERTY IRL Aprilia Racing Team Aprilia RSV4 Factory 19.087
11 M. BERGER FRA Team Effenbert Liberty Racing Ducati 1098R 29.840
12 L. ZANETTI ITA PATA Racing Team Ducati 1098R 30.158
13 H. AOYAMA JPN Honda World Superbike Team Honda CBR1000RR 44.222
14 C. DAVIES GBR ParkinGO MTC Racing Aprilia RSV4 Factory 1'20.387
15 D. SALOM ESP Team Pedercini Kawasaki ZX-10R 1'42.698
16 S. GUINTOLI FRA PATA Racing Team Ducati 1098R 1 Lap
17 J. SMRZ CZE Liberty Racing Team Effenbert Ducati 1098R 1 Lap
--------------------------------------------------Not Classified--------------------------------------------------
RET M. BIAGGI ITA Aprilia Racing Team Aprilia RSV4 Factory 1 Lap
RET L. CAMIER GBR FIXI Crescent Suzuki Suzuki GSX-R1000 4 Laps
RET N. CANEPA ITA Red Devils Roma Ducati 1098R 4 Laps
RET J. HOPKINS USA FIXI Crescent Suzuki Suzuki GSX-R1000 8 Laps
NS N. BRIGNOLA ITA Grillini Progea Superbike Team BMW S1000 RR
NS D. JOHNSON AUS Team Pedercini Kawasaki ZX-10R
Race two
1. Sylvain Guintoli FRA PATA Ducati 1098R 19m 42.051s
2. Loris Baz FRA Kawasaki Racing ZX-10R +0.881s
3. Jakub Smrz CZE Liberty Effenbert Ducati 1098R +1.671
4. Eugene Laverty IRL Aprilia Racing RSV-4 +19.045s
5. Maxime Berger FRA Effenbert Liberty Ducati 1098R +22.116s
6. Carlos Checa ESP Althea Ducati 1098R +23.736s
7. Chaz Davies GBR ParkinGO MTC Aprilia RSV-4 +24.690s
8. Marco Melandri ITA BMW Motorrad S1000RR +26.197s
9. Jonathan Rea GBR Honda WSBK CBR1000RR +26.861s
10. John Hopkins USA Crescent Fixi Suzuki GSX-R1000 +27.194s
11. Max Biaggi ITA Aprilia Racing RSV-4 +29.243s
12. Tom Sykes GBR Kawasaki Racing ZX-10R +30.328s
13. Michel Fabrizio ITA BMW Italia Goldbet S1000RR +32.746s
14. Hiroshi Aoyama JPN Honda WSBK CBR1000RR +34.905s
15. Niccolo Canepa ITA Red Devils Ducati 1098R +35.849s
16. Lorenzo Zanetti ITA PATA Ducati 1098R +40.091s
17. Leon Haslam GBR BMW Motorrad S1000RR +58.530s
-------Not Classified---------
18. Ayrton Badovini ITA BMW Italia Goldbet S1000RR 7 laps completed
19. Davide Giugliano ITA Althea Ducati 1098R 6 laps completed
20. Leon Camier GBR Crescent Fixi Suzuki GSX-R1000 3 laps completed
21. David Salom ESP Pedercini Kawasaki ZX-10R 1 lap completed
