Disappointed Jenson Button says he must 'sort myself out' in the wake of U.S. GP form
Ousted Perez now been top McLaren for the last three GP weekends
Monday 18 November 2013 19:50, UK
Jenson Button has accepted he needs to "sort myself out" after a disappointing U.S. GP weekend in which he was outperformed by outgoing McLaren team-mate Sergio Perez.