Mezue ahịrịokwu na-esonụ: N'afọ 1970, Marichal nwere nnukwu mmeghachi omume na penicillin nke butere mgbu azụ na ọrịa ogbu na nkwonkwo na-adịghị ala ala. Ọrụ Marichal sụrụ ngọngọ na, mgbe o dere naanị mmeri iri na abụọ na ERA ya gbagooro na 4.12, tupu ọ na-edozi onwe ya na oge kpakpando nke 1971 nke o meriri egwuregwu iri na asatọ na ERA ya dara n'okpuru 3.00. Ọ bụ naanị oge nke Marichal nwetara nlebara anya maka Cy Young Award, na-agwụ na 8th ebe. Ndị Giants laghachiri na playoffs maka oge mbụ kemgbe 1962, na-emeri ngalaba NL West ma na-eche ihu na Pittsburgh Pirates na
Njikọ Njikọ Njikọ NL. Marichal bidoro egwuregwu nke atọ nke egwuregwu ahụ ma tụba nke ọma, na-egbochi mmebi iwu nke Pittsburgh ka ọ bụrụ naanị Bob Robertson na Richie Hebner. Agbanyeghị, ndị Giants jisiri ike gbaa ọsọ naanị otu, na-efunahụ egwuregwu bọọlụ 2<unk>1 tupu ha efunahụ usoro egwuregwu atọ na otu. 1971 bụ nnukwu oge ikpeazụ nke Marichal (na nke ikpeazụ ya nke 10 All-Star pụtara), agbanyeghị. N'afọ 1972, ọ malitere na 1<unk>6, wee mechie oge ahụ na ndekọ 6<unk>16. Mgbe o biputere ihe ndekọ 11<unk>15 na 1973, e rere nkwekọrịta ya na Boston Red Sox na Disemba 8.