Mezue ahịrịokwu na-esonụ: Marcel Roth bụ onye Switzerland lara ezumike nká slalom canoeist onye mpi site na mbubreyo 1950s na mbubreyo 1960s. O ritere ọla nchara atọ n'asọmpi otu C-1 na ICF Canoe Slalom World Championships, na-enweta ha na 1959, 1961 na
Ọ bụ n'afọ 1963.