Mezue ahịrịokwu na-esonụ: Erden bụ onye na-agba bọọlụ mgbe nile n'òtù egwuregwu mba Turkey. Ahụmịhe mba ụwa mbụ ya bịara na 2005 U20 European Championship nke emere na Moscow. O nwetara akara 10.4 na 8.0 rebounds na egwuregwu asaa maka Turkey. Na 2006 U20 European Championships, nke e mere na Izmir, Turkey, Erden nyeere Turkey aka inweta ọla ọcha, na-agbakọ 5.4 isi na 3.4 rebounds na egwuregwu asatọ. N'otu afọ ahụ, ọ nwetara ebe na ndị otu Turkey maka 2006 World Championship na Japan. O nyere 2.2 isi na 2.3 rebounds n'otu egwuregwu. N'ime
2007 European Championship na Spain, Erden na-agbatị 1.0 isi na 1.0 rebounds na egwuregwu ise ya.