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.
Reed, who has become the Mets closer after Jeurys Familia underwent surgery to remove a blood clot in his shoulder, has given up eight runs in 18 2/3 innings this year for a 3.86 ERA. By comparison, he allowed 18 runs (17 earned) in 77 2/3 innings last year.
"If I had an answer, I'd tell you," Reed said, according to Newsday's Marc Carig. "I haven't done anything different from last year."
Starting pitcher Jacob deGrom gave up four runs and eight hits in six-plus innings, while four relievers, including Reed, combined to allow seven runs and five hits in two innings. No Mets starting pitcher has pitched more than six innings in a game in any of their last 14, according to Carig.
"I'm frustrated," deGrom said, according to Carig.