Chinese Grand Prix:

Since Mercedes' return to Formula 1 as a front-line manufacturer - via their buy-out of BrawnGP for the 2010 season - they had not enjoyed a race win. But that changed courtesy of Nico Rosberg in Shanghai as he led the race from pole for a deserved victory. Button might well have pushed him closer but for McLaren pit-stop gremlins to emerge once more.  It bunched the Briton into a superb scrap for second with a litany of cars which he edged over Hamilton.