Rosberg stretches F1 championship lead after Russia triumph

Lewis Hamilton salvaged second place after fighting back from 10th

Mercedes, Formula 1, Nico Rosberg

German Mercedes driver Nico Rosberg leads after the start of the Formula One Russian Grand Prix at the Sochi Autodrom racetrack in Sochi, Russia, Sunday, May 1, 2016.(AP Photo/Ivan Sekretarev)

Nico Rosberg has made it four straight wins to start the new Formula One season with victory in the Russian Grand Prix.

Defending world champion Lewis Hamilton finished second in Sochi, despite having to start 10th on the grid.

That meant a Mercedes 1-2, with Kimi Raikkonen third for Ferrari.

The seventh consecutive victory across the end of 2015 and the start of the 2016 season means that Rosberg, who has enjoyed a trouble-free start to the season, now leads three-time world champion team-mate Hamilton by 43 points.

 

Four-time champion Sebastian Vettel crashed out on Lap 1 as his Ferrari was involved in a collision.