Watch: Erling Haaland's 20-minute hat-trick on his Borussia Dortmund debut

Erling Haaland wasted little time in endearing himself to the Borussia Dortmund faithful, coming off the bench to turn a 3-1 deficit into a 5-3 victory over Augsburg, thanks in no small part to his record-breaking 23-minute hat-trick.