To express it simply, the 1973 Grand Prix season was: the Third Year, and the Last Year, of Jackie Stewart.
He had to fight for his third world championship. Some observers had suggested he was beyond his peak, but every time he climbed into his Elf Tyrrell Ford, whether to race or merely test, he demonstrated his prowess was at its maximum.
He won five GPs - a third of the year's total - two of them so thoroughly they were complete Stewart dominations from start to finish. He also won the single non-championship F1 round he entered. In virtually every other race he was strongly in contention at some stage at least, and even on those occasions when his car was unmatched to the circuit he still put every nerve-end of his brilliant ability into driving.