Formula One championship leaders Red Bull have dominated the first practice for the Japanese Grand Prix while title contender Lewis Hamilton crashed his McLaren early in the session.
Germany's Sebastian Vettel, who won the event last year was the fastest.
His Australian team mate Mark Webber, the championship leader who is 11 points clear of Ferrari's Fernando Alonso with four races remaining in the season was second.
Renault's Robert Kubica was the best of the rest, more than half a second slower than Vettel.
McLaren, who've vowed to throw everything at their car in all out bid to overtake Red Bull, showed some signs of improvement with Hamilton on the pace before crashing.
Seven-times world champion Michael Schumacher, suffering in the Mercedes in his comeback season, was a morale-boosting eighth at one of his favourite circuits.