Max Biaggi celebrated his 39th birthday by taking a commanding victory in the second race at Misano to once again take the double.
Suzuki rider Leon Haslam had a better race, finishing in second place, but he was powerless to stop Biaggi opening out a four second lead. Biaggi now leads the championship by 37 points.
Factory Ducati rider Michel Fabrizio completed the podium after coming out on top of a scrap with Cal Crutchlow, who finished fourth.
1. Max Biaggi ITA Aprilia Alitalia Racing RSV-4 24 laps
2. Leon Haslam GBR Alstare Suzuki GSX-R1000 +4.095s
3. Michel Fabrizio ITA Ducati Xerox 1198 +4.631s
4. Cal Crutchlow GBR Yamaha Sterilgarda YZF R1 +5.014s
5. Carlos Checa ESP Althea Ducati 1198 +6.256s
6. Sylvain Guintoli FRA Alstare Suzuki GSX-R1000 +7.677s
7. Shane Byrne GBR Althea Ducati 1198 +10.144s
8. Luca Scassa ITA Team Supersonic Ducati 1198 +10.942s
9. Noriyuki Haga JPN Ducati Xerox 1198 +13.640s
10. Troy Corser AUS BMW Motorrad S1000RR +16.279s
11. Leon Camier GBR Aprilia Alitalia Racing RSV-4 +17.799s
12. Jonathan Rea GBR Ten Kate Honda CBR1000RR +22.793s
13. Lorenzo Lanzi ITA DFX Ducati 1198 +24.131s
14. Max Neukirchner GER Ten Kate Honda CBR1000RR +28.212s
15. Chris Vermeulen AUS Kawasaki SRT ZX-10R +36.551s
16. Tom Sykes GBR Kawasaki SRT ZX-10R +49.636s
17. Broc Parkes AUS Echo-CRS Honda CBR1000RR +50.041s
18. Roger Lee Hayden USA Team Pedercini Kawasaki ZX-10R +51.246s
19. Matteo Baiocco ITA Team Pedercini Kawasaki ZX-10R +58.174s
20. Federico Sandi ITA Gabrielli Aprilia RSV-4 +1min 10.688s