AP Sports Writer
ATLANTA (AP) -- The St. Louis Cardinals' bats fell flat in Atlanta during a three-game series between NL division leaders.
That leaves little margin for error in their upcoming four-game showdown for the Central lead.
The Cardinals were swept in three games at Atlanta for the first time in 10 years Sunday night as Jason Heyward homered and drove in two runs to help the Braves beat St. Louis 5-2.
St. Louis still boasts baseball's best record but leads Pittsburgh by only 1
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