Sport: 24 hours in pictures

Competitors dive at the start of the women's 50m butterfly at the Australian Swimming Championships in Sydney. Swimmers will experience the post-polyurethane blues, with the sleek full-length suits worn by most elite swimmers in the last two years now banned
Photograph: Rick Rycroft/AP

A Boston Celtics fan gets into the spirit of things for his team's St Patrick's Day game against the New York Knicks
Photograph: Brian Snyder/Reuters

New Jersey Devils' Dainius Zubrus shoots under the dive of Pittsburgh Penguins goalie Brent Johnson
Photograph: Mike Segar/Reuters

Universidad de Chile fans light flares during a Copa Libertadores match against Brazil's Flamengo in Santiago
Photograph: Roberto Candia/AP

Gregor Schlierenzauer of Austria soars through the sky to qualify for the Ski Flying World Championships in Planica
Photograph: Hrvoje Polan/AFP/Getty Images

The Cottesloe crew nose dives during the Masters competition at the Australian Surf Life Saving Championships at Kurrawa Beach on the Gold Coast
Photograph: Dave Hunt/EPA

Rafael Nadal of Spain competes with John Isner of the US during the BNP Paribas Open in California. Nadal won 7-5, 3-6, 6-3
Photograph: Gabriel Bouys/AFP/Getty Images

France's Jo-Wilfried Tsonga struggles to hold back Sweden's Robin Soderling and is beaten in straight sets
Photograph: Chris Carlson/AP

At the Vancouver Winter Paralympic Games, Cho Young-jae of Korea makes a sly pass under his legs against Sweden during an ice sledge hockey classifications game
Photograph: Martin Rose/Bongarts/Getty Images

Mark Arendz of Canada kneels for the rifle stage of the 12.5km standing biathlon
Photograph: Hannah Johnston/Getty Images

Laurent Caul-Futy of France leans into a bend during the giant slalom
Photograph: Jonathan Hayward/AP

The England squad share a joke during a practice session ahead of the second Test against Bangladesh
Photograph: Aijaz Rahi/AP

Houston Rockets' Jordan Hill dunks against the Memphis Grizzlies. Houston won 107-94
Photograph: David J Phillip/Associated Press

Hot air balloons float over the Putra Mosque during the second International Hot Air Balloon Fiesta in Malaysia
Photograph: Ahmad Yusni/EPA