Tylor Megill was the kingpin of the Mets’ combined no-hitter last week, and he had the same mojo into the middle innings Wednesday.

But instead of receiving bullpen support, the right-hander could only watch as an inferno erupted. Adam Ottavino never got an out in the sixth inning and soon the Braves had batted around and scored seven runs.

The Mets’ franchise record series victories to begin a season died at seven with a 9-2 loss at Citi Field that produced a split in the four-game series with Atlanta. The Mets (18-9) will open another four-game series on Thursday in Philadelphia.

Ottavino, pitching for a third straight day, faced three batters in the sixth and allowed a walk, a double and a single after the Braves had loaded the bases with one out against Megill.

Adam Duvall’s two-run double, after Travis d’Arnaud walked to force in the game’s first run, tilted the game in the Braves’ favor. Ottavino then threw a wild pitch that brought home another run before Dansby Swanson delivered an RBI single. Ronald Acuña Jr.’s single against Trevor Williams brought in the sixth run of the inning. The seventh run scored during a botched rundown of Acuña between first and second.

The Braves didn’t get their first hit against Megill until the fifth, giving the right-hander nine combined innings of a no-hitter, including his start against the Phillies last Friday. Duvall’s single followed a Francisco Lindor fielding error, but Megill escaped the trouble, striking out Guillermo Heredia and Acuña to end the inning.

Megill lasted 5 ¹/₃ innings and allowed three earned runs on four hits with nine strikeouts and two walks. The strikeout total was a season high for Megill, who produced nine swings-and-misses with his four-seam fastball, which averaged 95 mph.

Heredia’s two-run homer off Williams in the eighth accounted for the Braves’ final runs.

In the top of the second, Heredia reached near the top of the right-field fence to steal an extra-base hit from Jeff McNeil leading off the inning. The Mets put two runners on base in the third, but neither Lindor nor Pete Alonso could deliver against Ian Anderson.