Note: Single-source report; awaiting corroboration.
The World Aquatics Water Polo 4x4 Open Championships are scheduled to take place in Dubrovnik, Croatia. However, the official World Aquatics website currently shows no competition data for this event. All times are displayed in local time and the user's local time, but there are no posted schedules, results, or athlete information.
The lack of competition data includes schedules, medal tables, results, and rankings, as noted on the official championship webpage.