Sergio Perez is fighting for his future at Red Bull. His contract is up at the end of the season, and he’s trying to prove that he’s worthy of an extension. Perez joined the Bulls ahead of the 2021 season and signed a new two-year deal in May 2022. But it wasn’t always a certainty that he’d see out that contract. The Mexican endured a disappointing 2023 campaign, finishing a record 290 points behind teammate Max Verstappen in the championship. That put him on the back-foot heading into this year. Perez has responded well to the pressure by delivering three runner-up finishes and four podiums i…