Hamburg confirmed they have turned to experienced coach Mirko Slomka to help them avoid relegation from the Bundesliga in the wake of Bert van Marwijk's dismissal.
Ex-Netherlands coach Van Marwijk, 61, was sacked on Saturday night after Hamburg were drubbed 4-2 at bottom side Eintracht Braunschweig, their seventh consecutive league defeat seeing them set an unwelcome club record.
Slomka now steps in after spells at both Bundesliga sides Schalke and Hannover, who sacked him in December after a string of away defeats.
He will be Hamburg's 11th coach in just over ten years.
The 46-year-old notably helped Schalke to second place in 2007 and he took over at Hannover in 2010, steering the Lower Saxony side to the UEFA Europa League in 2011/12 and 2012/13.
After only 143 days in charge, Van Marwijk was relieved of his post, along with his assistant Roel Coumans, after an emergency meeting of the club's board late Saturday with the team second from bottom.
Hamburg have never previously been relegated from the Bundesliga.