Ya kasance mamba ne na kungiyar Boston da ta lashe gasar cin kofin duniya ta farko
Gasar Duniya ta 1903. Duk da kasancewa dan wasan tsaron gida mai baiwa, Ferris ya yi kuskure a saman wasan farko na wasan farko na jerin, wanda Kitty Bransfield na Pittsburgh ya buga, kuma a yin haka ya aikata kuskuren farko a tarihin World Series. Ya buga dukkan wasannin Boston a wasan karshe, wanda suka ci 3 zuwa 0. Boston ta maimaita a matsayin masu cin nasara a 1904, kodayake ba a buga Wasannin Duniya a wannan shekarar ba. Ferris ya buga kawai.213 a wannan kakar, kuma tawagar ta fadi a cikin matsayi a cikin shekaru masu zuwa yayin da 'yan wasan tauraruwa suka fara nuna shekarunsu. A shekara ta 1906, Boston ta kasance a matsayi na karshe tare da rikodin 49 × 105. Ferris na ɗaya daga cikin 'yan wuraren haske na ƙungiyar, yana wasa da kyakkyawar kariya kuma yana cikin manyan shugabannin League na Amurka a cikin ƙarin tushe.