When it was over at Citi Field on Sunday — after another bullpen breakdown squandered an early lead and led to a second straight loss — the Mets were left to consider the longest nine-inning game in team history.

It had taken them 4 hours 29 minutes to fall, 10-7, to the Philadelphia Phillies. A wild throw, an intentional walk and another home run by Phillies third baseman Maikel Franco — his seventh against the Mets this season — led to the defeat.

For Mets Manager Mickey Callaway, it was all too familiar.

“He goes up to the plate every time against us probably thinking he’s going to hit a home run,” Callaway said.

But Franco is far from the only one comfortable taking swings at offerings from the Mets’ bullpen. The relievers continue to struggle down the stretch, and the club’s playoff hopes fade with each loss.