Summer McIntosh capped arguably the best world championships for a female swimmer, while the U.S. broke the women's 4x100m medley world record in the final event to finish with one more gold medal than rival Australia.

Summer McIntosh, the 18-year-old Canadian swimming star, rolled to victory Sunday in the women’s 400-meter individual medley, setting a world-championship record and winning her fourth individual gold medal of the event.

The US topped the medal table as the women’s 4x100m medley relay team set a new world record on the final day of competition in Singapore