Rubuta ci gaba don wannan sakin layi - DiPietro ya fara zama na farko a matakin kasa da kasa don Amurka a gasar zakarun duniya na 1999 na IIHF U18. Daga nan zai taka leda a gasar zakarun duniya biyu masu zuwa a shekara ta 2000
da 2001, an ba shi a cikin tsohon a matsayin mafi kyawun mai tsaron raga na gasar kuma an zaba shi zuwa All-Star Team.