Sebastian Vettel. Photo: Reuters

World champion 2016 Nico Rosberg believes that Sebastian Vettel of Ferrari will be difficult to compete for the title this season.

Four races before the end of the championship, Vettel inferior to the former partner Rosberg at Mercedes Lewis Hamilton 59 points.

Theoretically, the British could become a champion in short race in the United States (22 October), if I score 16 points more than Vettel in three of the last “Grand Prix” scored only 12 points, informs SE.

Ferrari is a team that can recover from any situation, but now the situation for Vettel is very difficult, – quotes BBC Rosberg. – Lewis is all right, and Sebastian needs some kind of miracle to get back in the fight.

But Vettel fighter. I know he won’t give up.