Dickey (8-7) allowed seven hits — none for extra bases until his final inning. The 42-year-old knuckleballer has given up one or no earned runs in eight of 23 starts.
Atlanta stopped a five-game losing streak, beat the Cardinals for the first time in six meetings this year and avoided getting swept in the season series for the first time.
Arodys Vizcaino pitched a perfect ninth for his first save since Aug. 5 and his sixth in eight tries.
