Casey Stoner has wrapped up the MotoGP world title with victory in his home event at Phillip Island today.
The Australian, already confirmed on pole position, was left needing only a top-six finish after the pre-race withdrawal of title rival Jorge Lorenzo, who suffered a serious finger injury when crashing in the warm-up.
And Stoner rode flawlessly to keep himself out in front, taking victory with Marco Simoncelli second and Andrea Dovizioso third.
It was Stoner's second MotoGP title - the first coming in 2007 - and came on his 26th birthday. The win represented Honda's first rider's title of the 800cc era.
Stoner led from start to finish, ensuring he kept out of trouble as an eventful race unfolded behind him.
Ducati's Nicky Hayden surged to second by the first corner but was soon overhauled by Gresini Honda's Simoncelli, factory Honda pair Dovizioso and Dani Pedrosa and Alvaro Bautista of Suzuki.
Valentino Rossi crashed out with 14 laps remaining on the other Ducati after a rash move to pass Bautista, but it was when rain arrived in the latter stages of the race that things were shaken up.
Simoncelli and Pedrosa both exercised far too much caution, allowing Dovizioso to pass the former for second place while the Spaniard was unable to make further headway from fourth.
Bautista, Cal Crutchlow, Hiroshi Aoyama and Karel Abraham all crashed out in the wet conditions as only 10 bikes finished the race.
Colin Edwards (Tech 3 Yamaha) was fifth of those, ahead of Pramac Ducati's Randy de Puniet, Hayden, Toni Elias (LCR Honda), De Puniet's team-mate Loris Capirossi - who, along with Hayden, switched to his wet bike - and Karel Abraham of Cardion AB Motoracing.