1973 Singapore Grand Prix 1973 Singapore Grand Prix The 1973 Singapore Grand Prix was a motor race held at the Thomson Road Grand Prix circuit on 22 April 1973. It was the final Singapore Grand Prix before the cancellation of the event, which resumed in 2008 as a round of the Formula One World Championship. The race was contested over 50 laps and was won by Vern Schuppan driving a March. The race was run to Australian Formula Two rules. John MacDonald had a brand new Brabham BT40 delivered to him for the race. However, his team ran into difficulty due to fuel pick-up
Brabham BT19 which Brabham described as "Brands Hatch on steroids". On the opening lap Brabham took the lead from Surtees, now driving a Cooper-Maserati. Brabham won after a race-long fight with the Englishman in the rain. With four wins and more finishes than any of his championship rivals, Brabham had a 22-point lead in the drivers championship and could only be caught in the championship by Surtees or Stewart if one of them won all three of the remaining races. Jack Brabham used BT19 again at the Italian Grand Prix at Monza, another high speed circuit. A second BT20 was completed at