Sebastian Vettel has raised doubts over Max Verstappen's treatment at the hands of his father as he tried to make the grade in F1.
Verstappen is on the verge of his second world title after victory last year, although he has been made to wait following last weekend's Singapore Grand Prix. His father Jos' tough-love approach is well-known across the circuit, particularly during Verstappen's karting days where he was even left at a fuel station after a poor performance.
While those methods have guided Verstappen to the top of the sport, former world champion Vettel has questioned if that is the approach necessary for aspiring elite athletes.
