Mercedes returned to the front of Formula 1 as Lewis Hamilton dominated the Japanese Grand Prix to put a stranglehold on the title race.

Mercedes were imperious as Hamilton stroked to victory and Nico Rosberg fought back to finish second.

But Rosberg fought back to pass Ferrari's Sebastian Vettel after his second pit stop.

Vettel's team-mate Kimi Raikkonen took fourth, by leapfrogging Williams's Valtteri Bottas in the same phase of the race.