14:32 – Mercedes boss Toto Wolff says there are no “magic bullets” to explain why Lewis Hamilton struggled compared to team-mate Valtteri Bottas at the Russian Grand Prix.

Hamilton lacked pace throughout the Sochi weekend, qualifying and finishing fourth, almost half a second off pole position and over half a minute away from the win.

Bottas, meanwhile, kept in touch with the Ferrari drivers in qualifying, and overhauled them both in the race to record his maiden Formula 1 victory.

Hamilton pointed to balance problems in the final sector after qualifying, with Wolff admitting post-race that Mercedes “couldn’t give Lewis the car that he needed”.

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