MLB

Walk-off homer in ninth stuns Gee, Mets

ATLANTA — Let’s play three.

The official record might as well show the Mets and Braves now engaged in a tripleheader, after heavy rain at Turner Field last night led to a horrifically late start and 1:22 a.m. conclusion between the two teams, with a doubleheader scheduled today.

Freddie Freeman ended the Late Show dramatically, with a two-run homer in the ninth inning against Dillon Gee that sent the Mets to a 2-1 loss.

Gee to that point had pitched 8 ¹/₃ shutout innings, and manager Terry Collins elected to give him a shot at the complete-game shutout. But Justin Upton singled with one out in the ninth before Freeman hit a towering drive that cleared the right-field fence to end it.

“It’s another one of those things, it’s another one of those games,”

Collins said. “We had no room to wiggle.

“He threw a great game and he deserved to finish it. You just hate to see the kid lose a game like that on one pitch.”

“I just didn’t get it done,” Gee said. “I had the opportunity and just couldn’t finish it.”

Gee (5-7) allowed only five hits and did not walk a batter. He was on the verge of winning his fourth consecutive start before Freeman’s heroics.

Matt Harvey will get the ball for Game 1 of today’s doubleheader before top pitching prospect Zack Wheeler makes his major league debut in the nightcap.

The Mets (25-40) failed to build momentum from their walkoff victory against the Cubs on Sunday, when Kirk Nieuwenhuis homered in the ninth inning at Citi Field.

Gee broke a scoreless tie in the seventh last night with a two-out RBI single against Tim Hudson. John Buck had singled leading off the inning and after Nieuwenhuis and Omar Quintanilla were retired, Collins faced the choice of a pinch hitter or sticking with Gee, who had thrown only 64 pitches at that point.

Gee remained in the game and drilled a single to left that brought home Buck.

Hudson lasted seven innings and allowed one run on six hits with three walks and six strikeouts.

Lucas Duda, in his first game since being shifted to first base, finished 4-for-4 with three singles and a double. Before the game Collins said he hoped the shift in position would invigorate Duda, who entered the night batting .226 with 11 homers and 23 RBIs. Duda’s four hits tied a career high and raised his average to .241. For good measure, Duda scooped up a Daniel Murphy throw in the eighth that retired Andrelton Simmons for the inning’s final out with the tying run on second.

Because of a steady downpour, first pitch was thrown at 10:53 p.m., nearly four hours after the scheduled start time.

mpuma@nypost.com