Sport: 24 hours in pictures

America's Juan Carlos Silva heads the ball during a Mexican League match with Tecos at Aztec Stadium in Mexico City. Authorities closed the 120,000-seater stadium to the public in response to a new strain of swine flu that has affected the city. Photograph: Gregory Bull/AP

Carl Edwards' car flips into the air after crashing with Ryan Newman, rear, and Brad Keselowski on the final lap of the Aaron's 499 NASCAR Sprint Cup Series at Talladega Superspeedway Photograph: Glenn Smith/AP

Supporters of the Dutch side AZ Alkmaar celebrate winning the championship for the first time in 28 years Photograph: Lex Van Lieshout/EPA

Belgium's Yanina Wickmayer celebrates victory over Canada during their Fed Cup World Group II playoff tennis doubles match Photograph: Thierry Roge/Reuters

Swimmers compete in an annual race at the confluence of the rivers Orinoco and Caroni near Puerto Ordaz, Venezuela Photograph: Reuters

Competitors run past the London Eye during the 2009 Flora London Marathon Photograph: Paul Gilham/Getty Images

A runner makes his way along Tower Bridge during the 26-mile race Photograph: Ryan Pierse/Getty Images

Marathon runners pass through Parliament Square Photograph: Anthony Devlin/PA

FK Austria Wien's Rubin Okotie reacts with dismay after his side lost an Austrian league match in Vienna Photograph: Robert Zolles/Reuters

Dario Franchitti makes a pitstop during the Indy 300 at Kansas Speedway in Kansas City Photograph: Darrell Ingham/Getty Images

Ericsson 4, skippered by Torben Grael, sails into the harbour in Boston to win the sixth leg of the Volvo Ocean Race Photograph: Brian Snyder/Reuters

Partizan Belgrade fans in fiery mood above a banner with a picture of former Bosnian Serb leader Radovan Karadzic. Partizan have won their 21st Serbian national league title Photograph: Marko Djurica/Reuters