Drapál was killed in 1985 after a collision with a Czechoslovakian track marshal during a 250cc race at the Piešťany airfield circuit in Czechoslovakia. Points system from 1950 to 1968:
Points system from 1969 onwards:
(key) (Races in bold indicate pole position. Races in italics indicate fastest lap).
He had little chance to race in the Grand Prix world championships during the Cold War, but still managed to win four Grand Prix races. Drapál had his best year in 1972 when he won the Yugoslavian Grand Prix and finished the year in seventh place in the 350cc world championship, riding a Yamaha. In 1973 he won two Grand Prix races but slipped to ninth place in the 350cc world championship.
