Red Bull’s termination of Christian Horner has sent shockwaves throughout the world of Formula One. A formidable presence in the sport, Horner had helmed Red Bull Racing throughout its rise and dominance.

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.