Jens Castrop is set to play for South Korea against Czechia at the World Cup in Guadalajara on Friday at 4 a.m. German time, a first appearance on this stage that carries more than the usual weight for the 22-year-old Borussia Mönchengladbach midfielder. Castrop learned the game in Düsseldorf-Lohausen, between the Rhine bend and the airport, and he now arrives at a tournament where his choice of national team has become part of the story around him.
He said he chose the homeland of his mother in the previous year and described it as a matter of the heart, saying he feels “einfach sehr koreanisch.” Castrop also called himself the first Korean national player born abroad, while making clear that the path through South Korea was not the easier route to a major tournament. He said he could have imagined being in contention for Germany, too, but that the switch had “nothing to do with the sporting possibilities.”
That distinction matters because Castrop’s name sits inside a broader debate about dual nationality, loyalty and football’s shifting borders. Germany’s sporting director Rudi Völler has said this kind of nation hopping is very bad and devalues national teams, adding that players should not be able to decide permanently who they want to represent. Castrop’s answer is the opposite of a calculated career move: he frames it as identity first, opportunity second.
His path also reflects how many Germany-born players are now turning up for other countries at the same World Cup. Can Uzun and Kenan Yildiz, who once played together in Regensburg, are with Turkey. Ibrahim Maza, who grew up in Berlin, will play for Algeria. Malik Tillman, born in Nuremberg, is in the United States squad. Rani Khedira is with Tunisia, and Josip Stanisic from Munich is with Croatia.
Another case is Dennis Eckert Ayensa, born in Bonn and developed at 1. FC Köln and Borussia Mönchengladbach, whose route to Iran was only recently cleared and who will play there in the coming weeks under the name Dennis Dargahi in the official squad lists. Against that backdrop, Castrop’s debut in Guadalajara is not just a fixture against Czechia. It is also a test of how far personal choice can reshape the face of a national team, even when the player says the decision was never about taking the easy way in.
What remains unknown is how much of the match Castrop will actually get. But his presence in the South Korea squad means his choice is no longer theoretical. On Friday morning German time, it becomes part of the World Cup itself.
