Whakaotihia te rerenga e whai ake nei: I takaro a Exum mo te kapa motu rangatahi o Ahitereiria i te 2012 FIBA Under-17 World Cup, i reira i whakaingoatia ai ia ki te kapa katoa o te whakataetae, me te
Ko te 2013 FIBA Under-19 World Cup, i reira i whakaingoatia ai ia ki te Team All-Tournament. I tohu ano a 2013 i te timatanga o Exum mo te tiima a-motu, e takaro ana ki a Aotearoa i te 2013 FIBA Oceania Championship. I te tau 2014, i purei ia mo Ahitereiria i te 2014 FIBA World Cup, i reira i toharite ai ia ki te 2.7 tohu, 1.5 rebounds me te 2.0 awhina i roto i nga keemu e ono.