Wimbledon 2014: day four – in pictures

Fans wait outside the practice courts for players' autographs Photograph: Dan Kitwood/Getty Images

Andy Murray gets some practice in ahead of Friday's match against Roberto Bautista Agut Photograph: Dan Kitwood/Getty Images

Andy Murray hugs his grandmother Shirley Erskine after finishing his practice session. His grandfather Rob Erskine was also there to see the defending champion hone his skills Photograph: Graeme Robertson/Graeme Robertson

Heather Watson stretches on the practice courts ahead of her match later against Angelique Kerber Photograph: Graeme Robertson for the Guardian

Fans wait patiently outside the courts before the day begins Photograph: Graeme Robertson for the Guardian

A wide view of Court 18 where Denis Kudla takes on Kei Nishikori Photograph: Graeme Robertson for the Guardian

Despite dropping his racquet at one point Kei Nishikori triumphed in straight sets 6-3, 6-2, 6-1 Photograph: Al Bello/Getty Images

Nick Kyrgios looks pained during his match against the No 13 seed Richard Gasquet. The unseeded player was two sets down but fought back to take the match into a fifth and deciding set. Finally, Kyrgios took the the match 3-6, 6-7, 6-4, 7-5, 10-8 Photograph: Matthew Stockman/Getty Images

Milos Raonic serves to Jack Sock during his 6-3, 6-4, 6-4 victory Photograph: Carl Court/AFP/Getty Images

Wonder what tunes Serena Williams was listening to before she came out onto No 1 Court to face Chanelle Scheepers? Photograph: Tony O'Brien/Action Images

Whatever the songs were, they inspired her as she trounced Scheepers 6-1, 6-1 Photograph: Al Bello/Getty Images

Wimbledon wouldn't be Wimbledon without strawberries and cream Photograph: Graeme Robertson for the Guardian

Ana Ivanovic swatted away the challenge of Jie Zheng with a 6-4, 6-0 win Photograph: Steve Bardens/Getty Images

Fans of tennis and retro fashion Photograph: Tony O'Brien/Action Images

A steward has his shoes shined by a helping hand Photograph: Dan Kitwood/Getty Images

Is it a case of deja vu for Rafael Nadal? He faced Lukas Rosol, who knocked him out of the 2012 tournament and won the first set here in 2014 6-4 Photograph: Jan Kruger/Getty Images

But Nadal digs deep to come back and take the second set on a tie-break Photograph: Jan Kruger/Getty Images

Nadal seems to be back in his groove as he takes the third and fourth sets 6-4 to progress to the next round Photograph: Glyn Kirk/AFP/Getty Images

Some youngsters try and get a glimpse of the action Photograph: Jonathan Brady/PA