ants ' ▁manager , ▁even ▁went ▁so ▁far ▁as ▁to ▁say ▁that ▁his ▁Gi ants ▁were ▁already ▁" world ▁champions " ▁since ▁they ▁were ▁the ▁champions ▁of ▁the ▁" only ▁real ▁major ▁league ". ▁At ▁the ▁time ▁of ▁the ▁announ cement , ▁their ▁new ▁cross - town ▁riv als , ▁the ▁New ▁York ▁High land ers ▁( now ▁the ▁New ▁York ▁Yan ke es ), ▁were ▁leading ▁the ▁AL , ▁and ▁the ▁prospect ▁of ▁facing ▁the ▁High land ers ▁did ▁not ▁please ▁Gi ants ▁management . ▁Boston ▁won ▁on ▁the ▁last ▁day ▁of ▁the ▁season , ▁and ▁the ▁le agues ▁had ▁previously ▁agreed ▁to ▁hold ▁a ▁World ' s ▁Championship ▁Series ▁in ▁ 1 9 0 4 , ▁but ▁it ▁was ▁not ▁binding , ▁and ▁Br ush ▁stuck ▁to ▁his ▁original ▁decision . ▁In ▁addition ▁to ▁political ▁reasons , ▁Br ush ▁also ▁fact ually ▁c ited ▁the ▁lack ▁of ▁rules ▁under ▁which ▁money ▁would ▁be ▁split , ▁where ▁games ▁would ▁be ▁played , ▁and ▁how ▁they ▁would ▁be ▁operated ▁and ▁staff ed . ▁ ▁During ▁the ▁winter ▁of ▁ 1 9 0 4 – 1 9 0 5 , ▁however , ▁feeling ▁the ▁st ing ▁of ▁press ▁criticism , ▁Br ush ▁had ▁a ▁change ▁of ▁heart ▁and ▁proposed ▁what ▁came ▁to ▁be ▁known ▁as ▁the ▁" Brush ▁R ules ", ▁under ▁which ▁the ▁series ▁were ▁played ▁subsequently . ▁ ▁One ▁rule ▁was ▁that ▁player ▁shares ▁would ▁come ▁from ▁a ▁portion ▁of ▁the ▁gate ▁rece i pts ▁for ▁the ▁first ▁four ▁games ▁only .