Antonio Rudiger was branded ‘unprofessional’ and ‘arrogant’ by ex-German player.
Japan stunned the four-time World Cup champions with a 2-1 win in their opening game of the tournament.
Takuma Asano scored the winner with seven minutes remaining.
In this game, Antonio Rudiger was seen showboating a bizarre running style to make the ball out of play.
German legend Dietmar Hamann has hit out at the Real Madrid defender’s gesture towards Japan.
‘Rudiger knows he’s going to run the ball out of play and he lifts up his legs,’ Hamann told RTE.
‘You don’t belittle the opposition because it always comes back at some stage.
‘I think it was very unprofessional. I think it was out of order. Arrogant. There’s no defence for it whatsoever.
‘He was having a laugh, there’s only one team having a laugh now.
‘I don’t know how many people picked up on it, but I will highlight it again because it’s not acceptable.
‘This is the spirit of the game, it’s about respect. He didn’t respect his opponent. And he paid the price for it. I think it was very unprofessional.’