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Hamilton: quickest
Just 48 hours after his triumph at Silverstone, Lewis Hamilton once more led the way after he set the fastest time in testing at Hockenheim, venue for next weekend's German Grand Prix.
As in the British Grand Prix on Sunday, teams had wet weather to contend with and the 23-year-old McLaren Mercedes driver again made light of the conditions to set a time of one minute 15.483 seconds.
World Champion Kimi Raikkonen, who shares the lead of the Drivers' Championship with Hamilton and Ferrari team-mate Felipe Massa, was second quickest, albeit over three-tenths-of-a-second slower.
McLaren used the test to run a new aerodynamic dorsal fin, similar to those used by Renault, Red Bull, Toro Rosso and Force India this season, on top of the engine cover of the MP4-23 car.
Williams driver Nico Rosberg, without a point in his last four races, was third fastest ahead of Force India's Adrian Sutil.
Hockenheim returns to the Formula One calendar this season after a year's absence following the decision to alternate hosting of the German Grand Prix with the Nurburgring.
Times:
1 Lewis Hamilton McLaren 1:15.483s 75 laps
2 Kimi Raikkonen Ferrari 1:15.803 63
3 Nico Rosberg Williams 1:16.099 87
4 Adrian Sutil Force India 1:16.516 97
5 Sebastien Bourdais Toro Rosso 1:16.533 113
6 Kamui Kobayashi Toyota 1:16.570 65
7 Nick Heidfeld BMW Sauber 1:16.593 59
8 Nelson Piquet Renault 1:16.856 111
9 David Coulthard Red Bull Racing 1:17.361 67
10 Alex Wurz Honda 1:17.825 89
All times unofficial
Paul di Resta was many people's rookie of the year in 2011 as he helped Force India to sixth in the constructor's standings.
Review our running live commentary from the first day of winter testing at Jerez...
Red Bull, McLaren and Ferrari take to the circuit at Jerez as they prepare for the 2012 season.