Marco Reus struck his 150th Dortmund goal on Sunday - then warned Rangers there is never a good time to face BVB despite the Bundesliga giants’ rocky form.
Reus netted a double as Borussia recovered from their Bayer Leverkusen lashing a week earlier to beat Union Berlin 3-0.
That steadied the ship for Marco Rose’s side and moved them back to within six points of leaders Bayern Munich.