Wimbledon: Day 10 in pictures

A sniffer dog finds a stray ball during a search of Court 15 at the All England Club and looks mighty pleased with himself ... Photograph: Owen Humphreys/PA

Serena Williams, somewhat overdressed for the occasion, walks on to Centre Court before her semi-final match against Elena Dementieva Photograph: Toby Melville/Reuters

Williams looks ferocious, but loses the first set on a tie-break Photograph: Srdjan Suki/EPA

Dementieva serves a ball to her American opponent Photograph: Carl De Souza/AFP/Getty Images

Williams stretches to play a forehand return Photograph: Stefan Wermuth/Getty Images

Serena Williams celebrates winnnig the second set in her victory on Centre Court Photograph: Tom Jenkins/Tom Jenkins

Russia's Elena Dementieva ends up on the floor during her match against Serena Williams Photograph: Stefan Wermuth/EMPICS Sport

No rain delays today, Sir Cliff, so you'll have to keep your summer holiday plans all to yourself ... Photograph: Carl De Souza/AFP/Getty Images

Andy Murray looking calm during a practice session ahead of his semi-final with Andy Roddick on Friday Photograph: Ian Walton/Getty Images

Absolute proof that you're never too old for fancy dress ... Photograph: Hamish Blair/Getty Images

Venus Williams plays a forehand return Photograph: Sean Dempsey/AP

Dinara Safina cuts a dejected figure during her 6-1, 6-0 defeat against Venus Williams Photograph: Gerry Penny/EPA