SAN FRANCISCO — In June, St. Louis Cardinals slugger Matt Holliday missed two games because of back spasms. With his back flaring up again Sunday night, Holliday has been reduced to a reserve role, if that, for Game 6 of the NLCS. The stakes are higher this time as the Cards, who lead the series 3-2, try to close out the San Francisco Giants for the second straight game. Matt Carpenter, who came off the bench in Game 3 to hit a go-ahead home run after Carlos Beltran went down with a leg injury, takes Holliday's place in the lineup and will play first base. Cards manager Mike Matheny has moved Allen Craig to left field and the cleanup spot, which usually is Holliday's. Carlos Beltran, usually No. 2 in the order, is hitting third. Holliday, who is batting .222 with a home run, a double, seven RBIs and 10 strikeouts in 45 postseason at-bats, also has been dealing with a family crisis. His mother, Kathy Holliday, underwent surgery for colon cancer in St. Louis on Thursday, hours before Game 4. Holliday told the St. Louis Post-Dispatch that a lot has been on his mind since his mom was diagnosed during the final segment of the NLDS against Washington: "It's been hard. This week's...