German Grand Prix: Button fastest in rain-hit first practice

Jenson Button was fastest and his team-mate Lewis Hamilton second as McLaren dominated a rain-hit opening practice for the German Grand Prix on Friday.

Intermittent showers made conditions tricky for the drivers although the rain was nothing on the scale which caused chaos at the British Grand Prix at Silverstone two weeks ago.

Valtteri Bottas crashed his Williams near the end of the session, smashing into the barriers on corner 13 and emerging unscathed to survey the damage.

Jenson Button was fastest and his team-mate Lewis Hamilton second as McLaren dominated a rain-hit opening practice.

Button set the best time of one minute 16.595 seconds early in the session before the rain began while Hamilton, who will be taking part in his 100th grand prix on Sunday, was 0.498 seconds behind.

They were followed by world championship leader Fernando Alonso of Ferrari and Mercedes' Michael Schumacher. However, the conditions meant it was difficult to read anything significant into the timings.

The German Grand Prix is seen as crucial to McLaren's season after poor performances in the previous two races saw them slip down the standings.

The session was the debut for the new version of the cars following a series of upgrades.

The Red Bull pair made little impact with Sebastian Vettel 12th fastest and Mark Webber 20th.

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