▁N L DS ▁versus ▁the ▁D od gers , ▁hom ering ▁twice ▁and ▁scoring ▁four ▁runs ▁in ▁an ▁ 8 − 3 ▁Card inals ▁win . ▁He ▁became ▁the ▁first ▁Card inal ▁with ▁a ▁multi - home ▁run ▁game ▁in ▁L DS ▁play . ▁In ▁Game ▁ 1 ▁of ▁the ▁National ▁League ▁Championship ▁Series ▁( NL CS ) ▁versus ▁the ▁Houston ▁Ast ros , ▁he ▁was ▁a ▁home ▁run ▁short ▁of ▁hitting ▁for ▁the ▁cycle . ▁ ▁St . ▁Louis ▁advanced ▁to ▁the ▁World ▁Series ▁to ▁face ▁the ▁Boston ▁Red ▁So x ▁− ▁the ▁first ▁and ▁only ▁of ▁Walker ' s ▁playing ▁career . ▁In ▁his ▁debut , ▁he ▁collected ▁four ▁hits ▁in ▁five ▁at ▁b ats ▁with ▁a ▁home ▁run ▁and ▁two ▁doubles . ▁His ▁four - hit ▁out ing ▁tied ▁a ▁Card inals ▁World ▁Series ▁record , ▁becoming ▁the ▁sevent h ▁overall ▁and ▁first ▁to ▁so ▁since ▁Lou ▁Bro ck ▁in ▁ 1 9 6 7 . ▁Boston ▁won ▁the ▁Series ▁by ▁swe eping ▁St . ▁Louis . ▁The ▁Card inals ▁strugg led ▁to ▁hit , ▁batt ing ▁. 1 9 0 ▁with ▁a ▁. 5 6 2 ▁OP S , ▁while ▁Walker ▁batt ed ▁. 3 5 7 ▁with ▁a ▁ 1 . 3 6 6 ▁OP S . ▁His ▁two ▁home ▁runs ▁account ed ▁for ▁the ▁only ▁two ▁hit ▁by ▁the ▁entire ▁Card inals ▁team . ▁In ▁the ▁ 2 0 0 4 ▁post season , ▁Walker ▁scored ▁ 2 1 ▁percent ▁( 1 4 ▁of ▁ 6 8