On day eight, Dressel won the final of the 100 meter butterfly in a world record time of 49.45. In his second race, Dressel ranked first overall in the semifinals of the 50 meter freestyle with a time of 21.42 and advanced to the final. In his last race of the day, the final of the 4x100 meter mixed medley relay, Dressel finished in fifth place with his relay teammates Ryan Murphy, Lydia Jacoby, and Torri Huske.