I te 15 o Paenga-whāwhā 2016 i whakaingoatia a Main hei tētahi o ngā kaitākaro tuatahi e rima i roto i tētahi kapa e waru ki te tohu i a Aotearoa i ngā hākinakina o te Raumati o Rio de Janeiro, i Brazil, i reira ia i whakataetae ai i ngā whakataetae 100m me te 200m Backstroke. I wikitoria a Main i tana 100 mita whakamuri
He wā 53.99 hēkona te wā i eke ai ia ki ngā whiringa toa. I mutu ia i te 15 o nga wa katoa i nga whiringa toa me te waa 54.29 hēkona, engari kaore i eke ki te whakamutunga. I roto i te 200m men's backstroke event Main qualified 15th fastest for the semifinals with a time of 1:57.51 Heoi tona wa o 1:58.08 kihai i nui ki te tango ia i roto i ki te whakamutunga.