Mezue ahịrịokwu na-esonụ: Onye na-agba ọsọ ọsọ na mahadum (o mebiri ihe ndekọ Scottish dị afọ 53 nke Wyndham Halswelle na 1961), Campbell sooro ndị otu Great Britain na 200 mita na
4 × 100 mita relay na 1964 Olympic Games na Tokyo, ma bụrụ onye isi ndị otu Scotland na 1966 British Empire na Commonwealth Games na Kingston, Jamaica. Ọ bụkwa onye isi ndị otu egwuregwu bọọlụ Great Britain n'afọ 1965 na 1966, ma jide ndekọ 100 mita nke Britain site na 1967 ruo 1974. N'otu oge a maara ya dịka "nwoke ọcha kachasị ọsọ n'ụwa", na-agba ọsọ 100m na 10.2 sekọnd ugboro abụọ n'afọ 1967. N'ọsọ nke mbụ ya nke were sekọnd 10.2 o meriri O. J. Simpson, onye bụ mgbe ahụ onye na-achọ ịghọ onye na-eme egwuregwu.