Haas is an unlikely destination given Horner’s stature and the good work done by Ayao Komatsu thus far, and working under long-time rival and adversary Zak Brown at McLaren is less likely than a return to Red Bull. This leaves three reasonable destinations on the table: Ferrari, Aston Martin, and Alpine.

Red Bull closes a chapter spanning all the highs and lows of the team’s history—one that includes two dominant eras, first with Sebastian Vettel and later with Max Verstappen, but it the recent downtu...

In less than two years, a championship-caliber team has disintegrated, Horner’s surprise sacking on Wednesday being the denouement.