Wimbledon 2011 Day 4 Order of Play
Novak Djokovic, Roger Federer and women's French Open champion Li Na all return to the Wimbledon show courts on what is promising to be glorious day on day four at SW19.
First on Centre court sees fifth seed Robin Soderling take on Lleyton Hewitt. The Swede knows he will have a tough afternoon against the former Wimbledon champion but he is expected to progress to round three.
French Open champion, Li Nan is second on Centre and has been handed a tricky looking encounter with un-seeded German, Sabine Lisicki. Lisicki reached the quarter final in 2009 but an injury forced her to withdraw from last year's event. The Chinese sensation will have to be on top of her game i f she is to avoid an early upset.
Roger Federer will be looking for a safe passage into the third round as he takes on un-seeded Frenchman Adrian Mannarino. Federer should have a comfortable afternoon against a player whose previous best performance at Wimbledon was the first round. Mannarino has only won eighteen career matches and Federer will be looking to take advantage of his opponent's lack of experience.
Second seed Novak Djokovic will be looking to build on his first round win as he takes on South Africa's Kevin Anderson. Anderson is better known for his doubles skills but could provide Djokovic with a few problems. Anderson has a technically sound volley and the Serb will have to be weary of Anderson's approach game.
Also on the show courts this afternoon will be two British women looking to cause major upsets. Laura Robson is last on Court No1 against former Wimbledon champion Maria Sharapova and on Court No2; Elena Baltacha will be looking to cause an upset against 20 seed Shuai Peng.
Centre Court - 13.00 BST START
Robin Soderling (SWE)  vs Lleyton Hewitt (AUS)
Na Li (CHN)  vs Sabine Lisicki (GER)
Adrian Mannarino (FRA) vs Roger Federer (SWI) 
Court No 1 - 13.00 BST START
Kevin Anderson (RSA) vs Novak Djokovic (SRB) 
Grigor Dimitrov (BUL) vs Joe Wilfred-Tsonga (FRA) 
Laura Robson (GBR) vs Maria Sharapova (RUS) 
Court No 2 - 12.00 BST START
Simona Halep (ROU) vs Serena Williams (USA) 
Oliver Rochus (BEL) vs Juan Martin del Potro (ARG)  to finish 7-6 (7)
David Ferrer (ESP)  vs Ryan Harrison (USA)
Caroline Wozniacki (DEN)  vs Virgine Razzano (FRA)
Elena Baltacha (GBR) vs Shuai Peng (CHN)