Sergio Perez urgently needs a big performance at the Sao Paulo Grand Prix if he’s to have any chance of keeping his Red Bull seat. As it stands, Liam Lawson looks like the strong favourite to partner Max Verstappen next year. F1 paddock rumours suggest Red Bull could sack Perez after Brazil, though the likeliest outcome remains a change over the winter. The 34-year-old has been defiant in the public domain, repeatedly pointing out that he has a contract. But Christian Horner and Helmut Marko have confirmed that his seat his up for grabs. Horner is willing to give Perez time to improve, but Mar…
