The Mets scored the game’s first six runs in the first two innings, but David Peterson and Reed Garrett surrendered nine runs to Atlanta in a hard-to-believe fourth en route to an 11-6 loss, one of the club’s worst of the season.

Instead, the Mets flushed a six-run lead — surrendering 11 unanswered — in an embarrassing 11-6 loss at Citi Field. The loss was the Mets’ 12th in 14 games and negated the positive vibes from a night earlier when the team snapped a seven-game losing streak and watched Pete Alonso become the franchise’s all-time home run leader .

David Peterson and Reed Garrett combined to give up nine runs in the fourth inning as the Mets fell flat in a 11-6 loss to the Braves on Wednesday.