Ex-Olympic champ Rowdy Gaines calls for changes at USA Swimming as team struggles in Singapore

Léon Marchand tries to break his own 200 IM world record at the swim worlds in Singapore

Katie Ledecky remains unbeatable in the 1,500 freestyle taking the title again at the worlds

America team at world swimming battles case of 'acute gastroenteritis' that damages performance

McIntosh goes for 5 individual golds at world championships with Los Angeles Olympics in sight

Yu Zidi of China is only 12 years old and has qualified for the world swimming championships in Singapore.