McLaren's title-contender Lewis Hamilton crashed in first practice at the Japanese Grand Prix after making his third mistake in as many races.
The Englishman lost control at the tricky Degner corner at Suzuka, slid into the gravel and hit the barriers, damaging the left-hand side of his car.
Hamilton was unhurt in the accident about half-way through the session.
The 26-year-old has crashed out of the last two races and slipped from second to third in the championship.
Hamilton's team-mate Jenson Button also went off the track at the same corner late in the session, but he managed to keep the car out of the barriers.
Button's incident was different in that Hamilton understeered wide when the front of his car lost grip, while Button lost the rear of the car on the way in to the corner.
Hamilton was second fastest behind Red Bull's Sebastian Vettel when he crashed.
The German retained top spot to the end of the session, ahead of his team-mate Mark Webber, the world championship leader.
More to follow.
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