JENSON BUTTON last night warned Sebastian Vettel: I'm right up for a title fight. The McLaren ace is confident he can bag back-to-back wins when F1 resumes after its summer break in Belgium tomorrow week. Vettel has an 85-point lead but Button, 31, said: "It felt great to go into the break off the back of the win in Hungary. "Seb has got a good lead in the championship but it is not over yet. "We can take the fight to him. We have got to keep putting the pressure on Red Bull. "Our car is really good right now. We've won three of the last five races so we have to keep on the right track and who knows what can happen."