Jorge Polanco is a Met.

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The power-hitting veteran is expected to spend most of his time at first base and designated hitter, according to The Post’s Jon Heyman , making Polanco a quasi Pete Alonso replacement, while bouncing around the other infield spots.

There’s only one problem. Polanco has only made the smallest of cameos at first base during his 12-year big league career.

And it wasn’t on purpose.

On April 6 against the Giants last season, Polanco entered the game with two outs in the ninth inning after Mariners outfielder Victor Robles dislocated his shoulder jumping into the netting at Or

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