Canadian sensation Summer McIntosh fell just short in her quest to match Michael Phelps's feat of winning five individual gold medals at a single world championships but that has given her the motivation to improve even more.

Canada’s Summer McIntosh capped a dominant world swimming championships with her fourth gold medal on Sunday, winning the women’s 400-metre individual medley in championship-record time.

Summer McIntosh is off to a perfect start at the swimming world championships with two gold medals in two days.