Blignaut raced locally in South Africa for many years and made two appearances in the Formula One Rand Grand Prix under the "Team Valencia" banner, in 1963 and 1964, finishing 12th on both occasions.

He also entered the 1965 South African Grand Prix, a World Championship event, but withdrew before the meeting took place.

[1] He later turned to team ownership, setting up the "Alex Blignaut Racing Team" and entering cars in the South African Formula One Championship throughout the late 1960s and early 1970s, earning many race wins.

Keizan also drove Blignaut's Tyrrell 004 in the World Championship South African Grands Prix in 1973 and 1974.

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