Lewis Hamilton took a crucial victory in the Italian Grand Prix after Nico Rosberg made a mistake under pressure from his Mercedes team-mate.
Lewis Hamilton, had to fight back after a poor start from pole position, caused by a glitch in his start procedure which dropped him to P4.
He had just closed to within a second of his sister Mercedes when the German ran wide at the first chicane.
Behind the two Mercedes drivers, Felipe Massa drove steadily to third place as his team-mate Valtteri Bottas recovered in impressive style from a poor start to take fourth.