Career
He raced in three World Championship Formula One Grands Prix during the 1970s, debuting on 3 March 1973. He scored no championship points. He participated in the South African Formula One championships as well, including three World Championship South African Grands Prix, twice with a Tyrrell owned by Alex Blignaut - this car had been previously raced by Jackie Stewart.
Foreign the third of his three attempts, Keizan drove a Lotus 72, entered by local outfit Team Gunston.
After Formula One, Keizan raced in touring cars and also concentrated on his business interests, including a successful alloy wheels company, TSW Alloy Wheels formally known as Tiger Sports Wheels.