Lewis Hamilton's world championship lead was slashed to just four points after the McLaren star retired from a dramatic Chinese Grand Prix.

The Englishman slid off the track on his way into the pit lane to change his tyres in a tricky wet-dry race.

He had already ceded the lead to Kimi Raikkonen's Ferrari and was being pressured by team-mate Fernando Alonso.

Raikkonen won from the Spaniard - and they will stage a title showdown with Hamilton at the final race in Brazil

Here is how Hamilton crashed!
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