 Complete the following phrase:  Sebastian Vettel and Charles Leclerc were retained for the 2020 Formula One World Championship, Leclerc was contracted to drive for the team through to 2024 and Vettel left the team at the end of 2020 joining Aston Martin F1 Team for 2021. Carlos Sainz Jr. joined the team from the season as Vettels replacement, coming from McLaren. In August 2020, the Scuderia signed the new Concorde Agreement to compete in the Formula 1 World Championship from 2021 to 2025 coinciding with the new rule changes while also expressing their synonymity and commitment with the sport. The 