Editorial content for the 2023 World Aquatics Championships is sponsored by FINIS, a longtime partner of Swimming World and leading innovator of suits, goggles and equipment. World Championships: Australian, American ‘B’ Teams to Race in Final Heat of Mixed 400 Free Relay (Full Lineups) Day seven of the World Championships will include qualifying in the women’s 50 freestyle and 50 breaststroke plus the men’s 50 backstroke and 1500 freestyle as well as the second mixed relay of the meet, the mixed 400 freestyle relay. This event, which is not contested at the Olympic Games, features two men and two women per country, almost always in that order. Check out the full lineups for prelims. The Australians are the top seed and favorites for gold, with a team of Kyle Chalmers, Flynn Southam, Mollie O’Callaghan and Shayna Jack expected to swim in the final, with a pair of individual world champions in Chalmers and O’Callaghan and Jack, who did not swim the individual event, having already won three relay medals this year while posting a leadoff 100 free time (52.08) that is tied for first in the world with O’Callaghan. In the morning, however, Australia goes with a largely different squad: Southam is joined by Jack Cartwright, Madison Wilson and Meg Harris. Swimming next to the U.S. in prelims, the Americans go with Matt King, Chris Guiliano, Olivia Smoliga and Bella Sims in prelims. Expect to see 100 free silver medalist Jack Alexy as one of the male swimmers in the final along with females Kate Douglass and Abbey Weitzeil. Italy should also get off to a strong start in that heat with Manuel Frigo and Alessandro Miressi while Gui Caribe leads of for Brazil. In the previous heat, Canada has a team of Ruslan Gaziev, Javier Acevedo, Mary-Sophie Harvey and Taylor Ruck, with Josh Liendo and Maggie Mac Neil among the possibilities for the final. Great Britain goes with Jacob Whittle, Tom Dean, Lucy Hope and Freya Anderson, with Matt Richards, Anna Hopkin and Lewis Burras available for the final. Sweden will have Cal teammates Robin Hanson and Bjorn Seeliger leading off ahead of Louise Hansson, and while the Netherlands will rest 100 free bronze medalist Marrit Steenbergen, 200 breast finalist Caspar Corbeau will race.
