Lewis Hamilton insisted he could overhaul Nico Rosberg in the Formula One world championship for the second time this year after relinquishing his hard-won lead in the standings in Singapore.

Hamilton fought back from 43 points behind earlier in the season to establish a 19-point lead - only for his Mercedes teammate Rosberg to clinch his third straight win on Sunday to go eight points clear.

Rosberg won qualifying by more than half-a-second from Red Bull's Daniel Ricciardo, with Hamilton back in third, and the German then led wire-to-wire for his eighth victory in 15 races this season.