He also won the 19th stage of the Tour de France in 1971 and the prologue of Paris–Nice in 1970.
He retired from professional cycling in 1978.Krekels won three four major races of 1968, including the Tour of Austria, to be selected to the 1968 Olympic team.
In 1969 he turned professional.
He turned down a contract with the French team, Bic because he did not speak French.
He rode instead for a small Dutch team and his career fizzled out.