Whakaotihia te rerenga e whai ake nei: I te 2012 Summer Olympics i Rānana, i wikitoria a Grevers i te katoa o nga mētara e toru: e rua koura me tetahi hiriwa. I whiwhi a Grevers i tana mētara tuatahi, he hiriwa, ma te kaukau mo te kapa tuarua o te US i nga wera tuatahi o te 4 × 100 mita relay freestyle. I te whiringa toa, ko te kapa Amerika te tuarua i muri i a France. I te mahi tahi me Jimmy Feigen, Ricky Berens, me Jason Lezak i roto i nga werawera, i kaukau a Grevers i te waewae tuarua ka tuhi i te waa 47.59. Whai muri i te arahi i nga rerenga (52.92) me nga haurua whakamutunga (52.66) o te
I te 100 mita i muri, i wikitoria a Grevers i te koura i te whiringa toa o te 100 mita i muri me te waa 52.16, i pai ake te rekoata a Orimipia a Aaron Peirsol mo te 52.54 i whakaturia i te 2008 me te 0.76 hēkona i mua o Nick Thoman. Mo Grevers, ko tana mētara koura takitahi tuatahi. I tana huihuinga whakamutunga, te 4 × 100 mita medley relay, i wikitoria a Grevers i te koura me Brendan Hansen, Michael Phelps me Nathan Adrian. I te kaukau i te waewae o muri, i tuhia e Grevers he wa 52.58 hēkona, a ka wikitoria te kapa US me te wa 3: 29.35.