Rubuta ci gaba don wannan sakin layi - Nielsen ya lashe lambar zinare a 1997 FIBA Under-21 World Championship tare da matasa 'yan wasan Australia. Ya kuma kasance memba na manyan 'yan wasan kwallon kwando na Australiya. Tare da manyan 'yan wasan kasar Australia, ya lashe lambobin zinare a Wasannin Kyauta na 2001, Gasar FIBA Oceania ta 2003, da Gasar FIBA Oceania ta 2005. Ya wakilci Ostiraliya a 2004, 2008
da kuma wasannin Olympics na 2012.