Retired Rosberg 'should have won' Russian Grand Prix

Nico Rosberg says he "should have won" in Sochi after being forced to retire from the Russian Grand Prix while leading.

The Mercedes driver suffered a throttle problem while leading in Sochi, potentially ending his world championship for 2016 hopes.

The German's Mercedes team-mate Lewis Hamilton won the race in Russia to extend his world championship lead to 73 points over Rosberg with just 100 left to play for.

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