Hamilton not worried about Rosberg

Hamilton knows he can beat Rosberg on any given day. What he does not know is whether Mercedes will engineer a title for German driver Rosberg

Lewis Hamilton insisted he is not concerned about Nico Rosberg's form, despite his team-mate narrowing his championship lead to 10 points after victory in the Austrian Grand Prix.

"When you think about the places where points have been lost, it has been a pretty good year so far," Hamilton said.

"He has done Barcelona and here, two out of eight isn't too bad really. I'm happy with that. He has had just two strong weekends."