Whakaoti i te rerenga e whai ake nei: I te Paenga-whawha 2016, i tohua a Groves ki te tohu i a Ahitereiria i te 100 m me te 200 m butterfly, me nga huihuinga 4 × 200 m freestyle relay i te 2016 Summer Olympics i Rio de Janeiro. Koia nei ōna whakataetae Olympic tuatahi. Kāore ia i eke ki te whiringa toa i te whakataetae
100 m butterfly, engari ko ia te tere rawa mo te whakamutunga o te 200 m butterfly. I wikitoria ia i te hiriwa, e toru rau noa iho o te hēkona i muri i te Paniora a Mireia Belmonte.