Mezue ahịrịokwu na-esonụ: N'egwuregwu Olimpik nke 2016 na Rio, o meriri ọla nchara na
Ọ na-agba ọsọ 100 mita butterfly na oge nke 56.63. Vollmer sokwa asọmpi na 4 × 100 mita freestyle relay n'otu abalị ahụ, nke ọ na-egwu mmiri ụkwụ nke atọ na nkewa nke 53.18. Ndị otu United States nke ya, Simone Manuel, Abbey Weitzeil, na Katie Ledecky meriri ọlaọcha na oge ndekọ America nke 3:31.89. Ọ sụrụkwa mmiri na 4 x 100 mita medley relay, na-enyere ndị otu US aka inweta ihe nrite ọla edo. Ọlaedo ya na medley relay bụ ọlaedo nke 1,000 maka US n'egwuregwu Olimpik nke oge ọkọchị.