Mezue ahịrịokwu na-esonụ: Heinz gbara asọmpi na 1951 Pan American Games mgbe ọ dị afọ iri na ise, na-enweta ihe nrite ọla nchara na mita 100 na 4 x 100 mita relay. Otu afọ mgbe e mesịrị, Heinz sonyere n'Egwuregwu Olimpik nke 1952 e mere n'obodo Helsinki, Finland. Ọ gbara ọsọ n'ime
100 mita ma mechaa nke atọ na agba nke mbụ ya, na-ewepụ ya n'asọmpi ahụ. Naanị ụbọchị ole na ole ka nke ahụ gasịrị, ọ sonyere na mita 200, ọzọ ka ewepụrụ ya na okpomọkụ ahụ mgbe ọ gwụchara nke anọ. Ihe omume ikpeazụ ya n'egwuregwu Olympic bụ ọsọ ọsọ 4 x 100 mita ya na ndị otu Lilian Buglia, Gladys Erbetta na Ana María Fontán. Ndị otu ahụ mechara nọrọ n'ọnọdụ nke atọ n'azụ Australia na Netherlands ma si otú a ghara ịga n'ihu na ngwụcha.