The Mets led 8-0 after Loney's three-run homer in the fifth. Steven Matz almost blew the lead as he allowed six runs on eight hits in the bottom of the inning.
Brandon Snyder hit a pinch-hit, three-run homer and Adonis Garcia had a two-run double in Atlanta's big inning.
Hansel Robles (2-3) threw 2 2/3 perfect innings to stop the Braves' comeback. Jeurys Familia recorded the final four outs for his major league-leading 25th save, with the last coming when he struck out Jace Peterson — but the ball bounced away from d'Arnaud, who quickly recovered it and threw a one-hopper to a stretched-out Loney, who dragged his foot along the bag. A video review confirmed the final out.
