The father of Stuttgart captain Christian Gentner passed on after their 2-1 win over Hertha Berlin on Saturday.
The Father died in the stadium immediately after the Bundesliga side's 2-1 win over Hertha Berlin.
Stuttgart said the club are "mourning the loss of Herbert Gentner" and that their thoughts are "entirely with the Gentner family at this difficult time".
The cause of death is not known at the moment. Gentner, 33, registered an assist for Mario Gomez's winner.
Gomez had pulled Stuttgart level after Max Mittelstadt's opener for Hertha.
Hertha Berlin posted on social media: "Everyone from Hertha would like to send their thoughts and condolences to Christian Gentner and his family after today's sad news."