Wen Xu, a senior on the Drury University swimming team, died Thursday after collapsing at practice.
Wen, who went by the name Ariel on campus, was a public relations/advertising major from Shanghai and a freestyle swimmer on the Drury team.
A school spokesman confirmed her death. More details are expected to be released Thursday evening.
Paramedics were seen performing chest compressions while wheeling someone into an ambulance outside of Breech Pool about 4:30 p.m.
Wen won two national titles as a sophomore, in the 200 medley relay and 200 freestyle relay, and as a junior she won a championship in the 50 freestyle.