Norwegian teenager Erling Haaland scored a hat trick on his debut to help Borussia Dortmund come from two goals down and win 5-3 at Augsburg on Saturday.

The 19-year-old Haaland, who came on in the 56th minute after Florian Niederlechner had put the home side 3-1 up, needed just three minutes to grab his first goal, and 23 to complete his treble.

Haaland, who joined from Austrian side Red Bull Salzburg during the winter break, became the first Dortmund player since Pierre-Emerick Aubameyang to score three times on his Bundesliga debut.

Dortmund's Erling Haaland sits on the bench during a German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Jan.18, 2020. ( Tom Wellerdpa via AP)

Dortmund's Erling Haaland sits on the bench during a German Bundesliga soccer match between FC Augsburg and Borussia Dortmund in Augsburg, Germany, Saturday, Jan.18, 2020. ( Tom Wellerdpa via AP)

Former United States international Claudio Reyna’s son Giovanni also made his debut. The 17-year-old Reyna came on in the 72nd minute and was booked in the 76th.

Dortmund cut the gap on Leipzig to four points ahead of the league leader’s game at home to Union Berlin later Saturday.

Also, Eintracht Frankfurt won at Hoffenheim 2-1, Cologne enjoyed a 3-1 win over Wolfsburg, Freiburg won at Mainz 2-1, and Werder Bremen won its relegation six-pointer at Fortuna Düsseldorf 1-0.

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