Atlanta has improved the worst record in the NL by winning seven of eight. The Mets have lost four of six.
A.J. Pierzynski drove in two runs off Matt Harvey to boost the Braves, who posted a three-game sweep at Citi Field last weeked.
The Braves trailed 3-2 when Freddie Freeman opened the eighth with a single off Jerry Blevins. Reed (1-2) relieved with one out and, with catcher Travis d'Arnaud calling for a chest-high fastball on an 0-2 count, Garcia connected on a pitch that badly missed the target for his fourth home run.
Jim Johnson (1-4) won in relief.
Arodys Vizcaino converted his 18th save in 21 chances. Pinch hitter Matt Reynolds walked, but Curtis Granderson flied out, Asdrubal Cabrera lined out and James Loney flied out to end it.
