Eduardo da Silva, the former Arsenal striker now at Shakhtar Donetsk, will sing both national anthems when he lines up in the 2014 World Cup opener between Brazil and Croatia.
As his name suggests, da Silva was born in Brazil. However, as a teenager, he emigrated to Croatia to play football and took up nationality back in 2002.
He's subsequently scored 29 times for his adopted country.
In the video above, SNTV hear from his mother, still back in Brazil, about how torn the loyalties will be in her household.
"He has said he will sing two anthems," she said. "He's Croatian for work. In his heart, he's Brazilian."