The women’s 100m backstroke final should be one of the best races of Paris, as the event’s four fastest swimmers of all time are expected to compete.

American Regan Smith, still in search of Olympic gold, and defending champion Kaylee McKeown of Australia have traded the world record back and forth, with Smith claiming it most recently at U.S. Trials in June.

They’ll take on Canadian Kylie Masse, the Tokyo silver medalist, and Smith’s teammate Katharine Berkoff, 23, the only one out of the four absent from last cycle’s podium.

At 2023 Worlds, the foursome took the top four spots in the following order: McKeown first, Smith second, Berkoff third and Masse fourth.

In the men’s 800m freestyle, American Bobby Finke will attempt to defend his title against 20-year-old Sam Short of Australia. Finke, the U.S. record-holder, won the world title in 2022, then lost to Short at 2023 Worlds.

Ireland’s Daniel Wiffen, last year’s world champion, could challenge for a spot on the podium as well.

The lone relay final of the night, the men’s 4x200m freestyle, is Great Britain’s to lose, boasting the the top two individual 200m free swimmers from 2023 Worlds in Matthew Richards and Tom Dean.

Team USA didn’t make the podium in Tokyo, breaking a streak of four straight golds, but is poised to challenge as the world champion in 2022 and runner-up to Great Britain in 2023.