Note: Single-source report; awaiting corroboration.

China secured a convincing 17-6 victory over Turkiye in their first-round league water polo match. China started strong, quickly building a 5-0 lead early in the second quarter. Turkiye replied briefly, but China maintained and extended their lead throughout the game, especially in the third and fourth quarters. Chinese players Xie, Shao, Yan, and Wang each scored three goals, while Turkiye's Elvira Yermakova also netted three for her team. China's Shen Yineng earned best goalkeeper honors with 11 saves. China’s defense and shooting accuracy contributed to their dominant performance, outshooting Turkiye 33-21 and recording more steals during the match.

In another first-round league phase match, Portugal defeated Great Britain 13-10 after a 10-10 tie in regular time, resolved by a penalty shootout. Great Britain made a late rally in the fourth quarter to tie the score, but missed all three penalty shots. Portugal's roster, including Madalena Lousa and Maria Machado, contributed to the victory. Great Britain's goalkeeper, Madeline Brown, made several key saves during regulation, but could not prevent defeat in the shootout.