Whakaotihia te rerenga e whai ake nei: I te 2012 U.S. Olympic Trials i Omaha, Nebraska, te hui tohu mo te kapa Olympic o U.S., ko McGill te tuarua i te huihuinga 100 mita butterfly me te waa 51.32 hēkona, kei muri noa atu i a Michael Phelps me Ryan Lochte. I te 2012 Summer Olympics i Rānana, ka noho a McGill ki te tuaono o te 100 mita butterfly, a ka whiwhi i te mētara koura ma te kaukau i nga waahanga mo te wikitoria o te kapa US i te 100 mita butterfly.
4×100-mita whakaranu whakaranu.