Rubuta ci gaba ga wannan sakin layi - kakar Rolen ta kasance daya daga cikin mafi kyawunsa. A mafi yawan kakar, ya jagoranci National League a RBIs, sau da yawa ya kasance a cikin shugabannin gasar a mafi yawan kididdigar da suka shafi rikice-rikice, kuma yana da mafi yawan kuri'un da aka zaɓa na kowane dan wasa don All-Star Game. Duk da samun rauni a ƙarshen kakar wasa, ya gama shekara tare da aikin da ya fi girma.314 batting average, 34 gida gudu, da kuma 124 RBIs. Ya gama na huɗu a cikin zaɓen MVP na National League. Rolen, tare da Albert Pujols da Jim Edmonds sun sami laƙabi "MV3" don shahararrun lokutan su na 2004. Cardinals na 2004 sun lashe National League Central Division tare da nasara 105. Rolen ta gudu biyu a cikin 6th inning na wasan 7 na NLCS
ya lashe gasar National League ga St. Louis ta hanyar kayar da Astros a wasanni bakwai. Duk da haka, Boston Red Sox ta shafe Cardinals a wasanni hudu don lashe gasar 2004 ta Duniya.