Mardy Fish (U.S.) v 32-Gael Monfils (France)
Two much improved players meet in a fourth round which could be a thriller. Monfils' athleticism and power will go toe to to with Fish's power and experience. The player who is more aggressive will win.
Prediction: Monfils

1-Rafael Nadal (Spain) v Sam Querrey (U.S.)
World number one Rafael Nadal has won the French Open, Wimbledon and the Olympics this year and looks unstoppable in big events. But he can be pressured into errors on faster surfaces and overpowered by the fastest servers. Monster server Querrey might take a set, but Nadal is on a roll.
Prediction: Nadal

9-Agnieszka Radwanska (Poland) v 7-Venus Williams (U.S.)
Wimbledon champion Venus Williams was injured when she lost her only meeting to Radwanska a few years ago. Williams, who is often critical of her tennis, says she is playing her best tennis this week which is bad news for Radwanska.
Prediction: Williams

4-Serena Williams (U.S.) v Severine Bremond (France)
Serena Williams earlier in the year won several tournaments in a row which along with reaching the Wimbledon final and winning this tournament would award her the WTA Tour's top ranking. She should be motivated to play well.
Prediction: Williams

10-Stanislas Wawrinka (Switzerland) v 6-Andy Murray (Britain)
Andy Murray of England plays well on hard courts but only if he could transfer that success onto the grass at Wimbledon. He still has several years to try.
Prediction: Murray

Anna-Lena Groenefeld (Germany) v 6-Dinara Safina (Russia)
Two big hitters meet on the second court today as Safina takes on Groenefeld. Safina has transformed herself from a mental wreck much like her older brother Marat Safin, into a devistating power baseliner who could move into the top ranking with a title win.
Prediction: Safina