Jaxson Dart took another step Saturday night toward grabbing the Giants’ starting quarterback job if Russell Wilson falters early this regular season.

Dart, 22, took first-team snaps in a game for the first time as a Giant — then led the second-string offense on two consecutive touchdown drives — in a primetime preseason tune-up against the Jets at MetLife Stadium.

The first-round pick out of Ole Miss directed a high-paced, 9-play, 71-yard scoring drive to open the second half, capped by a 20-yard touchdown pass to tight end Greg Dulcich. Then he plunged into the end zone from the 1-yard line to put the exclamation point on a 12-play, 55-yard scoring drive.

The second score capitalized on an interception by undrafted rookie defensive back Makari Paige. Dart finished 14-of-16 passi

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