A ranar 15 ga Afrilu 2016 Gasson an sanya shi a matsayin daya daga cikin 'yan wasa biyar na Olympics a cikin' yan wasa takwas da za su wakilci New Zealand a gasar Olympics ta 2016 a Rio de Janeiro, Brazil, inda ta yi gasa a gasar Olympics ta Olympics.
'yan mata mita 100 butterfly da' yan mata mita 200 butterfly.