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Austin Wells looked lost at the plate for much of the first half of the season.

Not anymore.

The lefty-swinging catcher continued his resurgence at the plate in Thursday night’s 6-5, 10-inning win over the Mariners, with a game-tying, two-run single in the bottom of the ninth.

He had three RBIs in the comeback win, which was sealed with Aaron Judge’s sacrifice fly in the 10th to complete the sweep of the Mariners in The Bronx.

After homering in three of his previous four games, Wells did his damage in a different way against Seattle closer Andrés Muñoz.

With the bases loaded and two out, Wells worked the count full before a single to right field scored Trent Grisham — who opened the inning with a base hit — and Cody Bellinger, who’d reached on a one-out single.

Wells also opened the scoring for the Yankees earlier in the game with a sacrifice fly with the Yankees trailing by five runs.

They’d been no-hit for seven innings by Seattle right-hander Bryan Woo until Jazz Chisholm Jr. led off the eighth with a single through the right side of the infield.

Chisholm got to third when Ben Rice sent one up the middle and with runners on the corners, Wells drove in the Yankees’ first run of the night.

It added to his recent stretch in which Wells has come on strong after it seemed as if he was in the lineup consistently because of his glove and framing ability instead of his bat — which was quite a change from his reputation coming through the Yankees’ minor league system, when Wells was known as a bat-first backstop.

He shook off an apparent left-hand injury when he was nicked by a foul ball behind the plate in the top of the sixth, but Wells’ night was just getting it started.