French swimmer Léon Marchand made history at the Paris Olympics by winning four gold medals, including two on the same night, with his victories in the 200m butterfly and 200m breaststroke marking a first for any Olympian. Marchand's performance has elevated him to international stardom, finishing the Games with an Olympic record in the 200m medley. Meanwhile, Australian Kaylee McKeown also shone, winning the 200m backstroke to maintain her unbeaten streak in individual events across two Olympics. The night was further highlighted by Katie Ledecky's record-setting performance in the 1,500m freestyle, making her the first woman to win gold at four Olympics. Additionally, China's Pan Zhanle broke the men's 100m freestyle world record, showcasing the high stakes of competition despite concerns over the pool's depth affecting overall performance. The Paris Games have been marked by unexpected results and the emergence of new stars, solidifying swimming's place in Olympic history.