A historic night for LASK.
Martin O'Neill's side came into their Champions League play-off second leg with a 3-0 advantage, and went 4-0 up after Callum McGregor scored in the 21st minute.
But then LASK started the comeback, and after Florian Flecker's goal levelled the score on aggregate, Samuel Adeniran scored the winner for the Austrians in extra time.