The Mets allowed 11 runs for the second consecutive game and were swept by the Milwaukee Brewers with an 11-9 loss Sunday at Miller Park.
New York, which entered Sunday with the highest team ERA in the majors, blew a 7-1 lead and gave up five runs in the bottom of the eighth inning, including Manny Pina's go-ahead three-run home run off Addison Reed that turned a 9-8 Mets lead into a two-run deficit.
"It's frustrating, but that's baseball," Reed said, according to the New York Daily News' Kristie Ackert. "Stuff is going to happen. Gone through a lot worse times than this."
The Mets fell to four games under .500 and 7 1/2 games back of the NL East-leading Washington Nationals after losing their fourth straight game.