On day eight, Jacoby swam in her first relay at the 2020 Olympics, swimming the breaststroke leg of the 4x100 meter mixed medley relay and helping the relay place fifth along with relay teammates Ryan Murphy, Torri Huske, and Caeleb Dressel. For her 100 meter portion of the relay, Jacoby swam a 1:05.09 without her goggles as they came off her eyes when she dove into the pool to start her swim.