Kammala jumla mai zuwa: A ranar 15 ga Afrilu 2016 an zabi Main a matsayin daya daga cikin 'yan wasa biyar na farko a cikin' yan wasa takwas da za su wakilci New Zealand a wasannin Olympics na 2016 a Rio de Janeiro, Brazil, inda ya yi gasa a cikin wasanni 100m da 200m Backstroke. Babban ya lashe nasa
maza 100m baya zafi da lokaci na 53.99 seconds don cancanci zuwa wasan kusa da na karshe. Ya gama 15th gaba ɗaya a cikin wasan kusa da na karshe tare da lokacin 54.29 seconds, amma bai ci gaba zuwa wasan karshe ba. A cikin maza 200m backstroke taron Main cancanci 15th fi sauri ga Semifinals da lokaci na 1: 57.51 duk da haka lokacinsa na 1: 58.08 bai isa ya kai shi zuwa wasan karshe ba.