The BBC's Shaimaa Khalil explains why the achievement by Greek swimmer Kristian Gkolomeev will not be accepted by official sporting bodies.
May 25, 2026 at 11:44PM <a href="https://www.bbc.com/news/videos/cm2ppx7d0k7o?at_medium=RSS&at_campaign=rss" target="_blank" style="padding: 10px 20px;
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