Swimmers dive at the start of a men\'s 50m butterfly heat during the competition on Sunday
China\'s Yan Zibei competing in a men\'s 100m breaststroke heat
Hungary\'s Katinka Hosszu competes in a women\'s 200m medley heat
Great Britain\'s Hannah Miley reacts after the women\'s 200m medley heat
Italy\'s Gabriele Detti in action in men\'s 400m freestyle heat
Katie Ledecky of the US seen during women\'s 400m freestyle heat
Turkey\'s Huseyin Emre Sakci during men\'s 100m breaststroke heat
Russia\'s Yuliya Efimova reacts after the women\'s 200m medley heat