Sergio Perez is going through a difficult period in Formula 1. Although the Mexican recently extended his contract at Red Bull Racing, his sporting performance on track leaves much to be desired. Last weekend, the six-time race winner finished eighth in Barcelona, and he did not have a flawless start this weekend either. In the sprint shootout in Austria, he got no further than P7. Perez's current form worries Sky Sports' analyst Martin Brundle.