VALENCIA, Spain (Reuters) - World champion Sebastian Vettel looked a good bet to end Formula One's record run of different winners and complete a Valencia hat-trick with the fastest time in European Grand Prix free practice on Friday.

The 24-year-old Red Bull driver, winner at the Spanish street circuit for the past two years, lapped with a best time of one minute 39.334 seconds in the second session under cloudy skies.

Red Bull Formula One driver Sebastian Vettel of Germany sits in his car during the first practice session of the European F1 Grand Prix at the Valencia street circuit June 22, 2012. REUTERS/Albert Gea

Fellow-German Nico Hulkenberg lapped second fastest for Force India, 0.131 seconds slower, in a session that had seven different teams in the top eight places and separated by little more than half a second.

There was less than a second between Vettel and the Ferrari of 15th placed Brazilian Felipe Massa.

In a further indication of how close Sunday's race could be, with overtaking always difficult and pole a huge advantage on Valencia's twisty track, the top nine drivers in the morning were separated by less than three tenths.

Formula One has seen seven different winners in the first seven races, a streak that has never happened before, but double champion Vettel has every chance of becoming the season's first repeat winner.

Venezuelan Pastor Maldonado, surprise winner in Spain last month, put Williams back on top of the timesheets on an overcast and breezy morning with a time of 1.40.890. Vettel had been second quickest.

Red Bull's Australian Mark Webber, who spent part of the first session watching his mechanics fix an hydraulic problem with the car's rear wing DRS system, was third and ninth respectively.

McLaren's Jenson Button, whose form has plunged since the 2009 champion won the season-opener in Australia, was smiling after ending the morning in fourth place, although he was 12th in the afternoon.

Ferrari's Fernando Alonso, competing in front of his home Spanish crowd for the second and last time this season, ended up fifth and seventh with teams trying out aerodynamic developments over the course of the day.

Mercedes's seven times champion Michael Schumacher lapped seventh and fourth fastest in the two sessions while championship leader and Canadian GP winner Lewis Hamilton was eighth and 14th for McLaren.

The only incident in the afternoon session was provided by Spanish driver Pedro de la Rosa crashing his HRT into the tyre barriers after 45 minutes.

There had been little track action for the first half hour of the morning run, with drivers doing installation laps only and ducking back into the pits without roaring down the main straight.

Maldonado, whose recent results have suffered after he was hit with three grid penalties in two races, posted his best just over half way through the 90-minute session.

(Reporting by Alan Baldwin in London; Editing by John O'Brien and Alison Wildey)

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