Tuhia he haere tonu mo tenei whitianga - I noho a Mantzaris hei mema o te kapa poitūkohu a-iwi a te tangata matua o te Greek i te tau 2011. He mema ia o nga roopu motu matua o Kariki i purei i te 2012 FIBA World Olympic Qualifying Tournament, te 2014 FIBA World Cup, me te EuroBasket 2015. I takaro ano ia i te 2016 Turin FIBA World Olympic Qualifying Tournament
, me te EuroBasket 2017.