Red Bull fired its racing chief after poor performances on the track and an exodus of key staff. Now it faces an uncertain future.

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.

Horner's 20-year tenure ends amid internal turmoil, on-track struggles and shifting power dynamics at Red Bull Racing