Dee ihe ga-aga n'ihu na paragraf a - O'Brien nọrọ akụkụ oge abụọ na ndị otu Washington na Cleveland tupu ịkwaga Boston. Oge kachasị rụpụta ọrụ ya bịara na 1899 dịka onye rookie, o zipụrụ.282 wee rute ọrụ kachasị elu na home runs (6), RBI (51), na-agba ọsọ (68), na-ezu ohi (17) na egwuregwu ndị a na-egwu (127). Mana a na-echeta ya nke ọma dịka onye ọkpụkpọ izizi kụrụ ọkpọ n'egwuregwu World Series, mgbe ọ kụrụ ọkpọ maka onye na-ejide Boston Lou Criger na 9th inning nke Egwuregwu Otu nke 1903
usoro megide Pittsburgh. Ihe O'Brien bụ pụrụ iche n'ezi ihe okwu ahụ pụtara, ma nwee ohere nke ịnọgide na-adị otú ahụ ruo mgbe ebighị ebi n'agbanyeghị ọrụ ya dị mkpirikpi ma bụrụ nke a na-amaghị ama. Ọ bụ.259 hitter na egwuregwu 326, gụnyere itoolu na-agba ọsọ na 133 RBI na 171 agba ọsọ.