Young, in the game after cleanup man Adrian Gonzalez was pulled for a pinch-runner in the eighth, got another chance in 12th. With runners on first and second, he grounded into an inning-ending double play against Lynn.
Beltran's double in the third barely eluded center fielder Andre Ethier.
Slowed by a sore ankle, Ethier made his first start in this postseason. He appeared to mistime his jump just a bit as he banged into the padded wall.
Beltran's two-run double in the third was the only damage against Greinke. He fanned Carpenter, Matt Adams and Pete Kozma twice each and struck out the side in the fifth.
The teams are postseason foes for the first time since a Dodgers sweep in their 2009 division series. It's their first NLCS matchup since 1985, when the Cardinals won in six games behind game-breaking homers from Ozzie Smith and Jack Clark off Tom Niedenfuer.
Kelly left on his own terms after six innings in a 2-all tie, hurt only by Juan Uribe's two-run single in the third. Counting multiple efforts, the Cardinals had five relievers warm but the Dodgers were 1 for 7 with runners in scoring position.
Kelly got all three outs on strikeouts in the first. The Dodgers left runners on second and third when Gonzalez and Yasiel Puig fanned.
Kershaw started the division series clincher against Atlanta on three days' rest Monday and will be on regular rest in Game 2. The left-hander said the media made a big deal of short rest, but not he nor Mattingly.
The pregame festivities began with a nod to tradition, with eight Clydesdales pulling a Budweiser beer wagon that made two laps around the warning track at Busch Stadium. For a long time, the Cardinals were owned by Anheuser-Busch. The ceremony ended with Hall of Famer Bob Gibson, St. Louis ace Adam Wainwright and injured closer Jason Motte throwing simultaneous first pitches.
Dodgers hitting coach Mark McGwire got a nice hand when he lined up along the third base line during introductions. So did two other former Cardinals, utility men Skip Schumaker and Punto. There was some booing for Greinke, who referred to Cardinals ace Chris Carpenter as a "phony" when Greinke was with the Brewers.
NOTES: Miss Missouri, Shelby Ringdahl, sang the national anthem. ... Carpenter, who entered in a 1-for-29 slump, walked and scored on Beltran's double. ... Greinke's career best is 15 strikeouts for the Royals on Aug. 25, 2009, against Cleveland. ... It was the longest NLCS game since the New York Mets beat Atlanta 4-3 in 15 innings on Robin Ventura's "grand slam-single" in 1999.