Laurent Mekies, the boss of sister team Racing Bulls, will replace Horner, who has been with the team since its inception in 2005 and led it to 124 wins and numerous championships.

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

As shocking as Christian Horner’s exit is, the biggest question it has raised is: what does this mean for Max Verstappen's future?