Dee ihe na-aga n'ihu maka paragraf a - World Series nke 1921 gosipụtara John McGraw's New York Giants, ndị raara onwe ha nye na-eme "egwuregwu dị n'ime" nke oge nwụrụ anwụ, na New York Yankees, bụ ndị dabere na "egwuregwu ike" nke Babe Ruth gosipụtara, onye na-abịa site na ihe nwere ike ịbụ afọ kachasị mma ya. Nke a bụ mbụ ndị Yankees pụtara na World Series, ndị gara n'ihu na-egwu na Series ugboro 40. Egwuregwu 1921 bụ egwuregwu a na-asọ asọ nke ọma nke kwụsịrị na egwuregwu abụọ na-egosipụta onye na-agba ọsọ na-agba ọsọ. Ọ bụkwa nke ikpeazụ n'ime World Series anọ iji usoro kachasị mma nke itoolu, nke e jiri mee ihe na 1903
, 1919, na mbipụta ndị nke 1920. N'afọ na-eso ya, World Series gbanwere na-adịgide adịgide na usoro egwuregwu kachasị mma nke asaa ebe ọ nọ kemgbe.