Mats Hummels, centre, and his teammates are preparing for their World Cup qualifier against Czech Republic. Sebastian Gollnow / AFP
Mats Hummels, centre, and his teammates are preparing for their World Cup qualifier against Czech Republic. Sebastian Gollnow / AFP
Mats Hummels faces warning after posting video of pool jump
Instagram post will likely trouble German team management days before key World Cup qualifiers.
Agence France Presse
August 30, 2017
