SOCHI: Lewis Hamilton took full advantage of his Mercedes’ teammate Nico Rosberg’s mechanical misfortunes to seize a commanding victory in Sunday’s incident-filled Russian Grand Prix and take a massive lead in the title race. The defending two-time world champion started second on the grid, inherited the lead when Rosberg slowed and then retired, after seven laps, with throttle pedal problems and claimed his ninth win of the season and 42nd of his career with ease. That lifted the Briton up to 302 points in the world championship, with Sebastian Vettel, who took second in his Ferrari, now on 236 points, 66 adrift, with Rosberg now 73 points adrift on 229. If the cards fall in his favour Hamilton can clinch the title in the next race in the United States on October 25.  In a race with two Safety Car interventions, several accidents and a series of retirements, Spaniard Carlos Sainz who had crashed heavily in his Toro Rosso on Saturday, was passed fit to start from the back of the grid, rose to 10th and retired after spinning off in the closing laps.