Christian Horner's departure from Red Bull Racing has shocked the Formula 1 paddock with the aftereffects from the Brit's exit sending shockwaves in the sport.

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.

Red Bull sacked Christian Horner, who was 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.