Red Bull sacked Christian Horner, Formula One's longest-serving active team principal and one of the most successful of all time, and replaced him on Wednesday with Racing Bulls' Laurent Mekies. Horner,

After 20 years at the helm of Red Bull Racing, Christian Horner is out as team principal and CEO, effective Wednesday. The bombshell move comes at a tumultuous time for the Formula One team as it struggles to create a competitive car, sitting fourth in the constructors’ standings largely thanks to Max Verstappen’s performances this season.

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