McIntosh is aiming to win five gold medals in individual events at the worlds in Singapore, and the first one came Sunday in the 400-meter freestyle on the first of eight days in the pool. Only legendary American Michael Phelps has ever won five individual medals in the worlds. He also did it at the Olympics.

Canada's Summer McIntosh claimed her second title in two days at the world championships in Singapore with victory in the women's 200 metres individual medley on Monday, while Chinese 12-year-old sensation Yu Zidi just missed out on a medal.

Canada captured bronze in the mixed 4x100-metre medley relay Wednesday at the world aquatics championship for its fifth medal in Singapore.