Gio van Bronckhorst savoured the joy of breaking his European away day cherry - but warned Rangers the job is only half done after sensationally dumping Dortmund in Germany.
The Ibrox side put on an astonishing display at the Westfalenstadion as James Tavernier, Alfredo Morelos and John Lundstram shot down the Bundesliga big guns.
Dan-Axel Zagadou’s own goal rounded off an incredible night for Scottish champions but there is still work to be done at Ibrox next week after Jude Bellingham and Raphael Guerreiro handed Marco Rose’s men a lifeline.