Dee ihe na-esote paragraf a - N'afọ 1982 na 1983, Marčiulionis na-egwuri egwu na Soviet juniors. O ritere ihe nrite ọla edo na 1982 FIBA Europe Under-18 Championship, na ọla ọcha na 1983 FIBA Under-19 World Cup, na Spain. Marčiulionis bụ onye ikpeazụ a na-ewepụ n'ogige ọzụzụ nke ndị otu egwuregwu bọọlụ basketball mba Soviet Union, ruo mgbe ọ mechara nweta ohere ya na ndị otu egwuregwu ndị okenye na 1987, na-enwe arụmọrụ na-agba ọsọ, ebe ọ na-enweta ọla ọcha na EuroBasket 1987
Ọ dị mma. Marčiulionis ga-abụkwa otu n'ime ndị egwuregwu pụtara ìhè, dịka ndị Soviet meriri nrite ọla edo na 1988 Summer Olympics.