Summer McIntosh breaks 2nd world record at Canadian swimming trials | CBC Sports

16-year-old Summer McIntosh of Toronto sets a new world record in the women's 400-metre individual medley with a time of 4:25.87 at the national swimming trials. On Tuesday, the Canadian swimming sensation broke the world record in the 400m freestyle. --------------------------------------------------------------------------------------------------------------------------- http://cbcsports.ca is your home for Canadian athletes, fans and the Olympic Games. Subscribe to CBC Sports: http://bit.ly/CBCSportsSub CONNECT WITH CBC SPORTS ON SOCIAL Facebook:   / cbcsports   Instagram:   / cbc.sports   Twitter:   / cbcsports