The Formula 1 paddock was rocked Wednesday by the news that Christian Horner, the longtime CEO and team principal of Red Bull Racing, has been fired after a 20-year run that featured many race wins and championships with drivers like Sebastian Vettel and Max Verstappen.

Christian Horner has been fired by Red Bull's Formula 1 team and it only adds to speculation about the future of four-time champion Max Verstappen.

After 20 years with the Team, Christian Horner departs Oracle Red Bull Racing as Team Principal and CEO. We thank him for his tireless and exceptional work. He has been instrumental in building this Team into one of the most successful in F1, with eight Drivers' Championships… pic.twitter.com/9SyqjSBvEG