American Kayla Han will be seeking double distance gold on the fifth night of action at the 2023 World Juniors as she's seeded 2nd in the girls' 1500 free.
Turkey's freestyle ace Merve Tuncel will try to capture her third consecutive 800m freestyle European Junior Championships title on day five in Belgrade.
Two of Great Britain's top seeds in events on day 1 of Euro's, Ben Proud and Anna Hopkin, have pulled out of their races on the opening day of the meet.