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 horeysay u ciyaaray heerka 20-ka sano ka hooseeya ee Division I ee
Horyaalka Adduunka ee dhalinyarada 2001. 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 wuxuu sameeyay muuqaalkiisii labaad ee heerka Division I ee 2002 World Junior Championships ee Austria, isagoo hogaaminaya dhamaan daafacyada tartanka isagoo 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.