He finished fifth in the Speedway World Championship in 1939.
They were also barred from the Speedway World Championship.
The 1987 Individual Speedway World Championship was contested for the one and only time over two days.
Mauger won the Individual Speedway World Championship in 1968, 1969, 1970, 1972, 1977 and 1979.
In 1936 he rode in the first ever Speedway World Championship.
He also qualified for the final of the Speedway World Championship in 1967.
He also reached the final of the Speedway World Championship.
Gundersen won the Speedway World Championship three times: in 1984, 1985 and 1988.
He reached the final of the Speedway World Championship on five occasions.
Olsen won the Speedway World Championship three times, in 1971, 1975, and 1978.
He finished fifth in the Speedway World Championship in 1939.
They were also barred from the Speedway World Championship.
The 1987 Individual Speedway World Championship was contested for the one and only time over two days.
Mauger won the Individual Speedway World Championship in 1968, 1969, 1970, 1972, 1977 and 1979.
In 1936 he rode in the first ever Speedway World Championship.
He also qualified for the final of the Speedway World Championship in 1967.
He also reached the final of the Speedway World Championship.
Gundersen won the Speedway World Championship three times: in 1984, 1985 and 1988.
He reached the final of the Speedway World Championship on five occasions.
Olsen won the Speedway World Championship three times, in 1971, 1975, and 1978.