Cardinals starter Adam Wainwright has settled in since giving up a run in the third.
Wainwright had a 1-2-3 fifth inning to keep the Cardinals in front 4-1. The Cardinals' offense hasn't had much to offer after its four-run second inning, but it's been enough for Wainwright.
Left fielder Randal Grichuk remains the big hitter Sunday, with his bases-loaded double the difference against Giants starter Matt Cain.
Wainwright gives one back in fourth, Cards still lead 4-1
The Cardinals had a big second inning where they scored four runs, but Adam Wainwright allowed the Giants to cut into that lead in the third.