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

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.

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.