Pinch hitter Trey Amburgey sent a 10th-inning grand slam over the left-field wall to give the Trenton Thunder an 8-4 win over the Portland Sea Dogs on Saturday night at Hadlock Field.

Portland’s Jordan Betts tied the game with a two-run homer in the sixth inning. Amburgey broke the tie with his home run, off Jordan Weems (1-1).

Trenton, the Double-A affiliate of the New York Yankees, outhit the Sea Dogs 16-6.

Sea Dogs starter Teddy Stankiewicz gave up three runs (two earned) on eight hits and a walk over five innings.

Trenton starter Dillon Tate didn’t give up a hit until Tate Matheny tripled in the fourth.

Trenton scored two runs in the second inning on a walk, two singles and an error. Portland answered with one run, as Tate walked the bases loaded with no outs, then limited the damage to Luke Tendler’s sacrifice fly.

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The Thunder made it 3-1 in the fourth when Jhalan Jackson scored on a wild pitch. Portland closed it to 3-2 in the fifth on a Jhon Nunez double and Chad De La Guerra’s RBI single.

Lefty Daniel McGrath relieved Stankiewicz in the sixth and gave up three hits and a run. But with Tate still pitching in the bottom of the sixth, Josh Ockimey reached on a fielding error and Betts followed with a two-run shot over the left-field wall.

Tate, one of the Yankees’ top pitching prospects, has had two of his worst starts in Portland. He gave up six runs in 1 1/3 innings last month.

NOTES: The announced paid attendance was 4,684. … Portland’s Travis Lakins pitched a 1-2-3 eighth inning. Since becoming a reliever Lakins has allowed one hit and no runs in eight appearances.