Bishii Agoosto 2015, Frederiksen waxaa loo magacaabay tababaraha xulka qaranka Denmark ee da'doodu ka yar tahay 21 jir, isagoo saxiixay qandaraas laba sano ah. Ciyaartii ugu horreysay ee uu mas'uul ka yahay, waxay ku badiyeen 1<unk>2 Jarmalka kulan saaxiibtinimo oo ka dhacay Stadion Lohmühle ee Lübeck, Schleswig-Holstein. Hogaanka Frederiksen, Denmark waxay u soo baxday UEFA European Under-21 Championship sanadkii 2017
iyo 2019, halkaas oo lagu garaacay marxaladda kooxaha, iyagoo dhammaystiray kaalinta saddexaad iyo labaad, siday u kala horreeyaan.