Jorge Lorenzo joined Alex Criville as the most successful Spanish rider in 500cc/MotoGP history after taking his 15th premier-class win, and first as the reigning world champion, in a dramatic Spanish Grand Prix.
Of the top five riders at the end of the opening lap - Casey Stoner, Lorenzo, Marco Simoncelli, Andrea Dovizioso and Ben Spies - Lorenzo was the only one to reach the chequered flag without running off-track or falling in the wet conditions.
A perfect combination of speed and patience proved the key to his second consecutive home Jerez victory and the Factory Yamaha star now leads the world championship by nine points over Repsol Honda's Dani Pedrosa, who finished in second place - but 19 seconds from Lorenzo - on Sunday.
The win was Lorenzo's first ever professional victory in the wet.
"It has been one of my most patience races. It's a great victory, which we needed and I feel so good. This is also the first time I have won in wet conditions, the first time ever!” said Lorenzo, who had been second to Stoner during round one in Qatar.
“Now we are working to improve our bike, taking as much points as possible on the way.
“The King of Spain said to me that he would bring me good luck after our meeting last February in Madrid, he was right! With the competition so high this year I never imagined I would be leader after two races.”
“A fantastic result and a fantastic race, it was very, very hard for the rider but he brought it home safely and under control; the best scenario that we could have imagined,” added team manager Wilco Zeelenberg.
“For Jorge leading the championship after two rounds as we did last year and with the competition we have at the moment is a dream. We're looking forward to the next round at Estoril which is a favourite track for him too."
Criville won 15 500cc races and one world championship in a ten-year premier-class career. 2011 is Lorenzo's fourth MotoGP season.
Pedrosa is the next most successful active Spanish rider after Lorenzo, with twelve MotoGP wins.
Yamaha looked on course for a perfect one-two in Sunday's race, until Ben Spies crashed out of second place with less than three laps to go.