Sport: 13th Fina World Championships

Michael Phelps powers through the water on his way to gold, setting a new world record with 1:51.51sec in the men's 200m butterfly final Photograph: Martin Bureau/AFP/Getty Images

Phelps celebrates his gold medal and world record with his mother Debbie Photograph: Kerim Okten/EPA

Brenton Rickard competes during a Men's 200m breaststroke heat where he grabbed the last semi-final place with a time of 2:10:54sec Photograph: Christophe Simon/AFP/Getty Images

Canada's goalkeeper Rachel Riddell gets ready to throw the ball during an 8-7 victory over Russia in their women's water polo semi-final Photograph: Stefano Rellandini/Reuters

Daniel Gyurta cuts through the water during the men's 200m breaststroke heats Photograph: Francois Xavier Marit/AFP/Getty Images

Elena Gemo dives backwards as she starts the women's 50m backstroke swimming semi-final Photograph: Alessandro Bianchi/Reuters

Italian supporters sing and dance as they watch the action Photograph: Christophe Simon/AFP/Getty Images

Laslzo Cseh swims in a men's 200m individual medley semi-final which finished in a dead heat with Ryan Lochte. Both swimmers progressed to the final Photograph: Mark J. Terrill/AP

Mark Gangloff is silhouetted as he starts in the men's 50m breaststroke final, he finished third to claim the bronze medal Photograph: Lars Baron/Bongarts/Getty Images

Elsie Windes scores one of her five goals in the USA's 8-7 victory over Greece in the women's water-polo semi-final Photograph: Andreas Solaro/AFP/Getty Images

Rebecca Soni competes in her women's 200m breaststroke heat which she won to progress to the semi-finals Photograph: Al Bello/Getty Images

Ryan Lochte, in white cap, dives into the water at the start of a men's 200m backstroke heat Photograph: Filippo Monteforte/AFP/Getty Images

The Foro Italico swimming complex is reflected in a competitor's bodysuit Photograph: Mark J. Terrill/AP

Yuta Suenaga competing during a men's 200m breaststroke heat where he finished ninth in the rankings to make it through to the semi-finals Photograph: Francois Xavier Marit/AFP/Getty Images