Sport: 24 hours in pictures The best images from the world of sport in the last 24 hours Tweet Cleveland Cavaliers' standout LeBron James pretends to take a picture before their NBA game against the Washington Wizards Photograph: Jonathan Ernst/Reuters In this combination of images De Luain Gorm falls and loses jockey G Gallagher in the John Smith's Fox Hunters' Chase during the first day of the Grand National horse race meeting at Aintree Photograph: Peter Byrne/AP Ruby Walsh who was un-seated by Star De Mohaison (not pictured) watches as Denman finishes without jockey Sam Thomas (not pictured) Photograph: Scott Heavey/Action Images A worker cuts the grass printed with a giant Malaysian flag at the Sepang International Circuit ahead of the grand prix Photograph: Stringer/Malaysia/Reuters Kimi Raikkonen of Finland and Ferrari drives during practice for the Malaysian grand prix at Sepang Photograph: Paul Gilham/Getty Images Pablo Martin of Spain plays a tee shot on the ninth during the first round of the Estoril Open de Portugal Photograph: Stuart Franklin/Getty Images Kenyan player Bennedict Nyambu, right, and Japan's Alisi Tupuailei vie for the ball during their match at the International Rugby Sevens Adelaide tournament Photograph: William West/AFP/Getty Images Britain's Carol Galashan and Helen Galashan compete on their way to win the bronze medal of the women's 10m Synchro event, at the European Diving Championships in Turin, Italy Photograph: Massimo Pinca/AP Anaheim Ducks' Teemu Selanne, of Finland, celebrates after scoring against the Vancouver Canucks in the NHL in Vancouver Photograph: Darryl Dyck/AP Serena Williams celebrates after winning her semi-final against Venus Williams at the Sony Ericsson Open, Florida Photograph: Clive Brunskill/Getty Images Rafael Nadal of Spain returns a shot against Juan Martin Del Potro of Argentina during the quarter-finals Photograph: Al Bello/Getty Images Milwaukee Bucks' Ramon Sessions passes to team-mate Luc Mbah a Moute, during their game against the Philadelphia 76ers Photograph: Michael Perez/AP New Zealand's Tim Southee appeals unsuccessfully for the wicket of India's Yuvraj Singh during their third international Test match in Wellington Photograph: Anthony Phelps/Reuters Romania's Sandra Raluca Izbasa performs on the beam during the qualifications of the third European Women's Artistic Championships in Assago, near Milan Photograph: Damien Meyer/AFP/Getty Images