Christian Horner, the longest-tenured team principal in Formula 1, is out after two decades. Here's what he told the team.

Power struggles, an investigation and a declining car eroded support for the only team principal Red Bull has ever known

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.