I was in agony for 15 laps - Hamilton

Lewis Hamilton says he encountered a number of problems during his victory at the Japanese GP, including a headache that left him "in agony".

Hamilton dominated in Suzuka after overtaking Mercedes team-mate Nico Rosberg on the first lap, a move he defends.

Hamilton also says he "can't believe" that he has now equalled Brazilian legend Ayrton Senna's record of 41 Formula 1 victories.

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