There used to be an extensive calendar of non-championship Formula 1 contests, which are celebrated in a special edition of Autosport magazine out this week. Some of them were minor events, but others were full grands prix, just as significant to their competitors as their points-paying equivalents.
The last non-championship F1 race was held at Brands Hatch in 1983 (above), when Keke Rosberg (Williams) beat Tyrrell driver Danny Sullivan by 0.5 seconds.
However, it doesn't make Autosport's list of the 10 best non-championship F1 races that deserve to be remembered...