"From there," Mattingly said, "it just seemed like the flood gates opened ... Took a lot out of him."
With two outs, Yadier Molina added an RBI single, Shane Robinson drove in two runs with a single in his first career postseason start after replacing slumping Jon Jay — and advanced to second base on Dodgers rookie Yasiel Puig's first of two errors in the Cardinals' big innings.
The Cuban defector, who stood in the outfield during the eighth inning with his arms crossed, also struck out twice and was booed heartily. Hanley Ramirez, a last-minute addition to the Dodgers' lineup, went 0 for 3 while playing with a broken rib.
Kershaw needed 48 pitches to get out of the third, the most pitches of his career. He took exception with one pitch in particular, complaining to plate umpire Greg Gibson after Matt Adams' full-count walk loaded the bases.
The Dodgers bench also was vocal after the call on a pitch that may have been an inch or two low of the strike zone.
The Cardinals knocked Kershaw out in the five-run fifth.
Molina and David Freese led off with singles and Adams followed with a double to chase Kershaw. Wacha drove in a run with a fielder's choice grounder and Carpenter had a sacrifice fly. Beltran capped the inning with an RBI single — his 37th postseason RBI in 45 career games.
Wacha has a minuscule 0.43 ERA in three postseason starts, one of the gems coming in Game 4 of the division series to keep the Cardinals alive. In his last regular season start and the NL Central up for grabs, he no-hit the Nationals for 8 2-3 innings.
This time, the Dodgers didn't have much of a chance again Wacha.
Carl Crawford led off the game with an infield hit but was erased on Mark Elllis' double-play ball. A.J. Ellis doubled to start the sixth and didn't advance.