Sergio Perez may have just two races to save his Red Bull future. Starting at the Hungarian Grand Prix this weekend, Perez must prove that he’s not a liability in the constructors’ championship. It’s highly unlikely, even if Verstappen suffers a DNF, that he manages to get within 100 points of his teammate before the summer break. That means Red Bull will be entitled to break his contract, should they wish. But if the Mexican can finally halt the slide that started at the Emilia Romagna GP in May, then he could change the narrative. The team may at least be willing to let him see out the campa…