Jenson Button's world championship winning season started with victory in the Australian Grand Prix in Melbourne. He beat his Brawn team-mate Rubens Barrichello into second place.
Then came Malaysia and a race so wet that the drivers couldn't get round the track safely. The race was stopped early and Jenson picked up half points for another win though.
The Chinese Grand Prix was pretty damp too. Jenson could only finish third this time, behind two drivers who would become big rivals - Mark Webber and Sebastian Vettel.
But the Bahrain Grand Prix was dry again, and Button blasted to his third win in four races, with Vettel pushing him all the way.
In Spain Jenson was even more dominant, beating fellow Brawn driver Barrichello by more than 10 seconds.
In Monaco qualifying in pole position is key, and having grabbed grid position one Jenson drove his Brawn GB car to yet another win.
Button was celebrating again in Turkey, and again it was team-mate Barrichello who finished second, making six wins in seven races for Button.
But in front of his home fans at the British Grand Prix things weren't so good. Title rival Vettel flew to victory at Silverstone and Button finished sixth.
A fifth-place finish was the best Button could do in Germany. Those Red Bull drivers had another big day, with Mark Webber first and Vettel second.
It didn't get any better for Jenson in Hungary, where Lewis Hamilton grabbed his first win of the season. Jenson finished down in seventh place.
And he finished in seventh place again at the European Grand Prix in Valencia, Spain. Team-mate Rubens Barrichello was second to become Button's biggest threat for the world title.
Jenson didn't even finish the Belgian Grand Prix, after tangling with Renault's Romain Gorsjean, but his rivals didn't score many points either.
A much-needed boost came in Italy, when Button was back on the podium with a second-placed finish. However, Barrichello closed the gap between them with a race victory.
Singapore saw Button finish fifth. Once again the drivers trying to beat him to the title couldn't take advantage.
Sebastian Vettel made it a three-driver battle in Japan with another win. Button scrapped his way to a crucial point with an eighth-place finish.
So to Brazil, where Button could clinch the world title if everything went his way. And it did, with his fifth-place finish sealing a first Formula World championship for the Briton.
Which made it time to start celebrating. Jenson became only the 10th British driver ever to become world champion.