Buuxi weedha soo socota: Markii uu yaraa, Ehrhoff wuxuu u tartamay kooxda Jarmalka ee ka yar 18 sano ee furitaanka 1999 IIHF World U18 Championships, oo lagu martiqaaday Füssen iyo Kaufbeuren, Jarmalka. Wuxuu ku soo laabtay sanadkii xigay 2000 IIHF World U18 Championships ee Switzerland, halkaas oo Jarmalku ku dhammeeyay kaalinta toddobaad. Ehrhoff ayaa markii ugu horreysay ka soo muuqday heerka ka hooseeya 20 ee Qaybta I ee 2001 World Junior Championships. Jarmalka oo martigelinayay tartanka magaalooyinka Füssen iyo Landsberg, ayaa ka maqnaa kor u qaadista tartanka weyn ee sanadka soo socda isagoo ku dhammeeyay kaalinta labaad ee ka dambeysa Faransiiska. Ehrhoff ayaa markii labaad u soo muuqday heerka Division I ee
2002 Horyaalka Adduunka ee Junior ee Austria, oo hogaaminaya dhamaan daafacyada tartanka oo leh seddex gool iyo 10 dhibcood shan kulan. Wuxuu ka caawiyay Jarmalka inuu ku guuleysto dallacsiinta tartanka weyn ee sanadka soo socda, isagoo ka adkaaday Austria 7<unk>1 ciyaartii bilada dahabka. Labada sano ee uu tartanka ku jiray, Ehrhoff wuxuu kasbaday abaalmarinta Difaaca ugu sarreeya.