Dee ihe na-aga n'ihu maka paragraf a - Jiří Krejza bụ onye bụbu onye Czechoslovak nke a mụrụ na Switzerland slalom canoeist nke asọmpi site na mmalite afọ 1970 ruo mmalite afọ 1980. O meriri ihe nrite anọ na ICF Canoe Slalom World Championships na ọla edo (C-2: 1973 maka Czechoslovakia), ọlaọcha abụọ (otu C-2: 1973 maka Czechoslovakia, 1977
maka Switzerland) na ọla (Mixed C-2: 1971 maka Czechoslovakia).