The United States set the world record in the 4x100 freestyle mixed relay, clocking 3 minutes, 18.48 seconds in the swim world championships.

A must-see race at the world swimming championship lived up to its billing. Canada's Summer McIntosh emerged with a bronze medal after a three-way duel from start to finish in the women's 800-metre freestyle Saturday in Singapore.

It’s Katie Ledecky of the United States against Summer McIntosh of Canada in the final of the 800-meter freestyle, probably the most anticipated race at the swimming world championships in Singapore