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.

Formula 1 team Red Bull Racing announced on Wednesday that it has fired its longtime team principal and CEO Christian Horner after two decades at the helm. Horner has been the longest-serving team principal in F1.

Red Bull Racing fired CEO and team principal Christian Horner, immediately ending his 20-year tenure, the Formula 1 team announced Wednesday.