Istvan Derenczeny/LEN Oleksandr Zheltiakov, seen at the 2023 European Junior Championships in Belgrade, Serbia, held on July 4-9, won three gold and one silver medals at the 2023 World Aquatics Junior Swimming Championships in Netanya, Israel, on September 4-9. Ukraine sent four athletes to the 2023 World Aquatics Junior Swimming Championships in Netanya, Israel, on...