The battle among the United States, Canada and Australia in the women's 4x100-meter medley relay culminated as the Australians claimed victory in Saturday's thrilling final at the Tokyo Olympics. The Australian squad posted an Olympic-record time of 3:51.60. The U.S. finished a close second at 3:51.73, followed by Canada at 3:52.60.

The Australian team of Kaylee McKeown, Chelsea Hodges, Emma McKeon and Cate Campbell took the gold medal, finishing ahead of the United States for the silver medal and Canada taking the bronze. The Australians finished with a time of 3:51.60, a new Olympic record, while the USA touched the wall at 3:51.73, 0.13 seconds behind.

The team of Briana Williams, Elaine Thompson-Herah, Shelly-Ann Fraser-Pryce and Shericka Jackson won the race with a time of 41.02 seconds, which wasn't far off the world record of 40.82 seconds set by Team USA at the 2012 Summer Games in London.