Mezue ahịrịokwu a: Marshall nọchitere anya United States n'egwuregwu Olimpik nke afọ 2008 e mere na Beijing, China. O nwetara ihe nrite ọla nchara site na igwu mmiri maka ndị otu nke atọ nke United States n'asọmpi nke mbụ nke
ụmụnwaanyị 4x200 mita freestyle relay. Ya na ndị otu ya n'agba nke mbụ setịpụrụ ihe ndekọ ọhụrụ nke mba Amerịka n'asọmpi ahụ.