The Mets’ lone Gold Glove finalist was betrayed by his defense on Wednesday night.

Luis Severino didn’t face much hard contact in Game 3.

Instead, the two runs he allowed in 4 ²/₃ innings were partly due to the pitcher not filling his position as well as usual.

“I feel like my glove ruined everything in that inning,” Severino said after the Mets’ 8-0 Game 3 loss at Citi Field.

The Mets never really recovered after Severino allowed those two unearned runs in the second inning.

It wasn’t entirely Severino’s fault.

He did walk Max Muncy from the frame, but Francisco Alvarez’s throwing error on a Teoscar Hernandez dribbler loomed large.

Severino couldn’t cleanly put in a comebacker by Gavin Lux, costing him a chance at a double play, and Will Smith singled off Severino, allowing the game’s first run to score.

“That wasn’t good. I should have caught that one,” Severino said. “It should have been an easy double play. On the other one I should have stopped the guy from going to home plate. I made a few mistakes there.”

The right-hander was fortunate that Tommy Edman’s sacrifice fly to right-center field was followed by Tyrone Taylor, otherwise things could have been worse that inning.

But the damage had been done.

Overall, Severino’s performance was decent, limiting Los Angeles’ high-powered lineup to three hits and those two runs.

While he didn’t give the Mets any length, Severino at least limited the damage.

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He got out of a bases-loaded, one-out situation in the third by eliminating Hernandez and Lux, worked a perfect fourth and came out in the fifth with two on and two outs.

That was Severino’s postseason – not disastrous, but not overly effective.

He came in with a 4.50 ERA after allowing six ER in twelve innings pitched, and he wasn’t much better Wednesday night.

Severino frequently found himself behind hitters, putting the Mets in an early hole and forcing the bullpen to 13 outs.

It didn’t help that Reed Garrett served up a two-run homer to Kiké Hernandez in the sixth to end the game.

The only positive was that Garrett was the only high-leverage reliever used.

With big games scheduled for Thursday and Friday, that was significant.