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.

Ledecky, trailing McIntosh at the 700-meter mark, surged ahead on the final lap, fending off a hard-charging Pallister as McIntosh faded in the closing meters. With the win, Ledecky remained undefeated in the 800-meter freestyle finals event on the world stage dating back to 2012.

American Katie Ledecky continued domination of the women's 800 meters freestyle with a brilliant swim to win gold.