Mezue ahịrịokwu na-esonụ: Red Sox bụ otu n'ime ìgwè ndị kasị nwee ihe ịga nke ọma na baseball site na 1901 ruo 1918. Ha meriri asọmpi World Series nke mbụ na 1908 (dị ka ndị Boston America; ndị otu gbanwere aha ya na Red Sox na 1908) na anọ ọzọ n'agbata 1908 na 1909. Na 1901, ndị Yankees, nke a maara mgbe ahụ dị ka Baltimore Orioles, na-egwuri egwu na Maryland maka oge abụọ tupu ha akwaga n'ebe ugwu. Ndị otu abụọ a nwere nzukọ mbụ ha na Baltimore na Eprel 26, 1901, afọ mmalite nke Njikọ Njikọ America. Na Mee 7, 1903, ndị otu abụọ ahụ gbara bọọlụ nke mbụ ha mgbe Orioles kwagara New York wee bụrụ New York Highlanders, na-ezo aka n'ịgba egwuregwu na mpaghara Washington Heights nke Manhattan. Egwuregwu ahụ bụ ọgụ mgbe onye na-agba bọọlụ bọọlụ Boston bụ George Winter dara. Boston ga-emesị gaa merie pennant na mmeghe
Egwuregwu World Series nke 1903. Oge 1904 gosipụtara ndị otu na-eche ibe ha ihu n'ụbọchị mmeghe. Ka oge na-aga, ndị Highlanders, nke pitcher Jack Chesbro duziri na oge mmeri egwuregwu 41 ya, zutere ndị Boston America na egwuregwu ikpeazụ nke oge iji kpebie onye mmeri American League. Chesbro gbara ọsọ n'elu agba nke itoolu, nke mere ka o si n'isi nke atọ gbaa goolu, Boston wee merie egwuregwu ahụ, ma merie iko ahụ. Ndị New York Giants, bụ ndị meririla National League pennant, jụrụ igwu egwu na 1904 World Series n'ihi echiche nke "Junior Circuit" dị ka nke dị ala (na n'ihi ebubo iro dị n'etiti onye guzobere American League na onye isi ala mbụ, Ban Johnson, na usoro ndị Giants, onye nwe ya John T. Brush na onye nchịkwa Hall of Fame nke otu ya, onye njikwa egwuregwu John McGraw); yabụ, enweghị World Series n'afọ ahụ. Ọ bụ n'afọ 2004 ka ndị Red Sox meriri ndị Yankees ọzọ n'egwuregwu na-ekpebi aha.