Asamoah played for Germany at the World Cup
Ghana-born striker Gerald Asamoah was the target of racist taunts at a German Cup game.
The Schalke player, who is black and played for Germany at the World Cup, scored two and set up three goals in his team's 9-1 victory over Hansa Rostock's development team on Saturday.
"I thought these times were over," Asamoah said. "I felt hurt."
Asamoah has spoken in the past about receiving racist abuse at German stadiums. The number of incidents has decreased, but Rostock is where such incidents had occurred before.
The Rostock team's general manager personally apologized to Asamoah, who declined an offer by his coach to be substituted at half time.
"I wanted to go on playing and show them all," Asamoah said.
Asamoah was a member of Germany's World Cup squad and will return to Rostock for a friendly against Georgia on 7 October.
"Maybe they can make it up to him then," Schalke coach Mirko Slomka said.
The incident is likely to be investigated by the German Football Federation following new disciplinary regulations aimed at clamping down on racism in the game.
In June, Fifa warned it will suspend national associations who fail to impose the new tough rules that came into force in July.