Bayer Leverkusen sacked Emir Spahic on Sunday, with the defender under investigation on suspicion of assault.
Bayer Leverkusen held on for a 3-2 win over Mainz to cement their fourth place in the Bundesliga.
Bayer Leverkusen defender Emir Spahic is being investigated over an alleged fight with stadium stewards.
Bayer Leverkusen made it a debut to forget for new Hamburg coach Peter Knabel, thrashing the northern Germany side 4-0.
Robert Lewandowski was the difference in the German Klassiker, while there were wins for Monchengladbach and Leverkusen
Ajax have signed striker Arkadiusz Milik on a permanent deal from Bayer Leverkusen.
Live only on