Toto Wolff defends Lewis Hamilton’s worst season as he finishes behind team-mate

POOR SEASON: Lewis Hamilton (left) finished behind team-mate George Russell in the world championship. Pic: Hussein Malla/AP

Mercedes boss Toto Wolff has defended Lewis Hamilton’s worst season in Formula One saying it is “irrelevant” that team-mate George Russell beat him.

Hamilton’s turbulent campaign ended in retirement with a mechanical failure in Sunday’s Abu Dhabi Grand Prix.