Dee ihe ga-aga n'ihu maka paragraf a - Benko mechara bụrụ onye mbụ (ma ọ bụ jikọtara ya na onye mbụ) na asatọ US Open Chess Championship, ndekọ. Utu aha ya bụ: 1961, 1964, 1965, 1966, 1967, 1969, 1974, 1975. O meriri asọmpi Canadian Open Chess Championship n'afọ 1964. Ọ nọchitere anya Hungary na 1957 Student Olympiad na Reykjavík na, na-agụta 71⁄2/12, na Hungary bụ nke anọ dị ka otu. O buru ụzọ soro ndị otu egwuregwu mba Hungary na Moscow 1956 Olympiad, na bọọdụ atọ, na-agụta 10/15, ma na-enyere Hungary aka inweta ọla nchara. Ọ kwagara United States, ma ọ bụ nanị na 1962 ka ọ pụtara n'òtù egwuregwu U.S. Ọ ga-emecha banye n'òtù isii n'usoro. Na Varna 1962, Benko gbara bọọdụ abụọ, wee nweta akara 8/12 maka ọla ọcha ọla ọcha na bọọdụ ya, na US mechara nke anọ. Na Tel Aviv na 1964
, ọ nọzịkwa n'ụgbọ nke abụọ, were akara 91⁄2/14, na US wee nọrọ n'ọkwa isii. Na Havana 1966, Benko nọ n'ụgbọ atọ, were akara 8/12, ndị America meriri ọlaọcha otu. Na Lugano 1968, o mere 6/12 n'ụgbọ nke atọ, na US kwụsịrị nke anọ. Na Siegen 1970, Benko nọ na bọọdụ anọ, na-enweta 81⁄2/12, ndị America mechakwara nke anọ. Egwuregwu Olimpik ikpeazụ ya bụ na Skopje 1972, ebe ọ gbara bọọlụ atọ, mee 91⁄2/16, na US wee nọrọ na nke itoolu.