Top seed Roger Federer advanced to the third round of the ATP Masters Series in Hamburg on Wednesday with a 6-1 6-3 victory over Finland's Jarkko Nieminen.
World number one Justine Henin has announced her retirement from professional tennis at the age of 25 with immediate effect.
A hip injury is threatening to force Australia's Lleyton Hewitt out of this year's French Open and Wimbledon championships.
Andy Murray eased into the second round of the Hamburg Masters with a comfortable 6-4 6-1 victory over Russia's Dmitry Tursunov.
World number three Novak Djokovic came back from a set down to beat unseeded Swiss Stanislas Wawrinka 4-6 6-3 6-3 and claim the Rome Masters title on Sunday.
Dinara Safina of Russia fought back from a set down for the third time in the tournament to win the German Open with a 3-6 6-2 6-2 victory over seventh-seeded compatriot Elena Dementieva.
Dinara Safina of Russia booked a place in the German Open final with a 6-4 6-1 win over unseeded Belarussian teenager Victoria Azarenka.
Australian Open champion Novak Djokovic and unseeded Swiss Stanislas Wawrinka will meet in the final of the Rome Masters after both their semi-final opponents retired injured.
Russian Dinara Safina won a great scrap with fifth seed Serena Williams 2-6 6-1 7-6 to end the American's 17-match winning streak and reach the German Open semi-finals.
Top seed Roger Federer crashed out of the Internazionali BNL d'Italia to Radek Stepanek at the quarter-final stage on Friday.