"I hate to lose," Wainwright said. "I felt like tonight if I had got a couple of balls in there, we win the game. I think you just have to tip your hat and move on."
The two pitchers were nearly even through the first three scoreless innings, with Wainwright giving up one hit. Ryu, who struggled in his first postseason start in the division series against Atlanta, retired 12 of his first 13 batters, yielding only a walk.
"I just zoned in," Ryu said.
Ryu was much improved after lasting just three innings as the first South Korean pitcher to start a playoff game last week against the Braves. He allowed four runs on six hits for a no-decision in a game the Dodgers won.
The left-hander didn't permit a Cardinals runner past second base. David Freese's single to right leading off the fifth was their first hit of the game.
Freese was replaced by a pinch-runner because of tightness in his right calf. He is day to day.
Ryu struck out four and walked one.
Mattingly came out to the mound accompanied by a translator with two outs in the seventh. Ryu responded by striking out Matt Adams to end the inning as Ellis pumped his right arm in the air. Fans waved South Korean flags in support of Ryu.
"It's definitely a big motivation when you see your star players go out there hurt," Ryu said through a translator. "It really inspires you and motivates you to go out there and do the best you can."
Kenley Jansen pitched a perfect ninth for a save.
Major League Baseball noted on Twitter that the nine combined runs in the series are the fewest ever through three games of a league championship series, according to the Elias Sports Bureau.
After the first two games in St. Louis were decided by one run, the Dodgers got to Wainwright in the fourth and took a 2-0 lead.
Gonzalez's double down the right-field line scored Mark Ellis, who doubled leading off. With two outs, Puig tripled off the wall in right to snap his 0-for-11 skid in the series.
Cardinals center fielder Jon Jay was involved in an apparent miscommunication when the ball hit by Mark Ellis dropped between him and right fielder Carlos Beltran. The Dodgers' first hit, a single by Ramirez to shallow center in the first, dropped between Jay and second baseman Matt Carpenter.
"It's a ball I've got to catch. I'm the center fielder. It's my ball. I've got to take charge," Jay said. "It came back to haunt us, but that's part of baseball. You're going to make mistakes sometimes."
NOTES: The Dodgers snapped a stretch of 22 innings without a run in the fourth. They hadn't scored since the third inning of Game 1. ... Ethier was 0 for 4 with a strikeout. ... Dusty Baker, Reggie Smith, Ron Cey and Steve Garvey — baseball's first 30-homer quartet in 1977 — tossed ceremonial first pitches. That Dodgers team won the NL pennant before losing to the Yankees in six games in the World Series. ... Neither team has a home run through the first three games. ... Among the famous faces in attendance were Dustin Hoffman and Ice Cube.
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