Borussia Monchengladbach's terrible start to the Bundesliga season continued as Pierre-Michel Lasogga scored a first-half brace to inspire Hamburg to a 3-0 victory at Borussia Park.
The visitors controlled proceedings early on and were gifted an opener when Tony Jantschke's intended back-pass went straight to Lasogga.
Lassoga doubled his tally when he headed in his third goal of the season unchallenged from Ivo Ilicevic's corner – the 23-year-old now just one shy of his total for last term.
Hamburg extended their lead shortly after the interval as Nicolai Muller's deft chip effectively ended the game as a contest.
Matters were made worse for the hosts when Martin Stranzl was taken off on a stretcher as they slumped to a fourth-straight defeat ahead of Tuesday's UEFA Champions League clash with Sevilla.
