Mezue ahịrịokwu na-esonụ: N'ime agba atọ nke egwuregwu na 2004, Walker jikọtara iji kụọ.293/.379/.707 na ụzọ abụọ nke ụlọ na asọmpi ọ bụla, na-edozi ndekọ aha maka ụlọ nke onye aka ekpe na-akụ na otu postseason. Walker mere egwuregwu mbụ ya na ndị Cardinals na Egwuregwu 1 nke NLDS megide Dodgers, na-agba ọsọ ugboro abụọ ma na-agba ọsọ anọ na mmeri 8-3 Cardinals. Ọ ghọrọ Kadịnal mbụ nwere ọtụtụ egwuregwu na-agba ọsọ n'egwuregwu LDS. N'egwuregwu 1 nke
National League Championship Series (NLCS) megide Houston Astros, ọ bụ onye na-agba ọsọ n'ụlọ na-akụ maka okirikiri.