Mezue ahịrịokwu na-esonụ: Shaver's best World result came at the
1974 World Championships na Munich, West Germany. Ọ nọ n'ọkwa nke asaa na ọnụ ọgụgụ, nke abụọ na mkpụmkpụ, nke atọ na nnwere onwe, na nke ise n'ozuzu. Ọ dọkpụụrụ akwara n'úkwù n'afọ 1974-1975. Ọ gbara onye nke asatọ na 1975 World Championships na Colorado Springs, Colorado.