A perfect weekend for Ducati Xerox moves them clear in both the rider and the manufacturer World Superbike standings after Kyalami, with Michel Fabrizio reinforcing Noriyuki Haga's dominance by overtaking Ben Spies.

A marvellous weekend for the defending champions, while Spies and Yamaha grappled with mechanical woes, a 1-2 result in both races for Ducati makes for some depressing reading for their rivals.

The figures currently stand at an 85 point advantage for Haga over his team-mate, who in turn is three points up on Spies. In the manufacturer standings, 72 points separate Ducati from Yamaha.

Elsewhere, Jonathan Rea's maiden podium has seen him make a substantial gain in the standings, leaping from eighth to fifth to be just ten points behind fellow Briton and Honda counterpart Leon Haslam.

Other movers are rather more minor, with many dropping or rising a single position, although a double top ten for Shinya Nakano does see him go from 17th to 14th.

Meanwhile, the flurry of injury replacements sees three new riders join the standings, the most successful being Gregorio Lavilla, ahead of Sheridan Morais and Fonsi Nieto. A total of 29 riders have enjoyed at least one top fifteen finish in 2009 now.

Full World Superbike Championship rider standings (After 6 rounds of 14 - Previous position in brackets)

1. (1) Noriyuki Haga Ducati Xerox 250 points 2. (3) Michel Fabrizio Ducati Xerox 165 3. (2) Ben Spies Yamaha WSB 162 4. (4) Leon Haslam Stiggy Honda 116 5. (8) Jonathan Rea Ten Kate Honda 106 6. (6) Max Biaggi Aprilia 103 7. (5) Tom Sykes Yamaha WSB 103 8. (7) Regis Laconi DFX Ducati 77 9. (9) Max Neukirchner Suzuki Alstare Brux 75 10. (12) Carlos Checa Ten Kate Honda 73 11. (10) Ryuichi Kiyonari Ten Kate Honda 72 12. (13) Yukio Kagayama Suzuki Alstare Brux 68 13. (11) Jakub Smrz Guandalini Ducati 64 14. (17) Shinya Nakano Aprilia 52 15. (14) Shane Byrne Sterilgarda Ducati 48 16. (15) Ruben Xaus BMW Alpha 40 17. (16) Troy Corser BMW Alpha 35 18. (18) Broc Parkes Kawasaki WSB 20 19. (19) John Hopkins Stiggy Honda 9 20. (-) Gregorio Lavilla Guandalini Ducati 9 21. (-) Sheridan Morais Kawasaki WSB 8 22. (20) Tommy Hill Althea Honda 6 23. (21) Karl Muggeridge Celani Suzuki 4 24. (22) Brendan Roberts Guandalini Ducati 3 25. (23) Roberto Rolfo Stiggy Honda 3 26. (24) Matteo Baiocco PSG-1 Kawasaki 3 27. (25) Luca Scassa Pedercini Kawasaki 3 28. (26) Makoto Tamada Kawasaki WSB 2 29. (-) Fonsi Nieto Suzuki Alstare Brux 1

Full World Superbike Championship rider standings (After 6 rounds of 14 - Previous position in brackets)

1. (1) Ducati 275 points 2. (2) Yamaha 203 3. (3) Honda 170 4. (5) Aprilia 106 5. (4) Suzuki 105 6. (6) BMW 59 7. (7) Kawasaki 27