Part of complete coverage on
Sharapova injury hits her preparations for U.S. Open
July 28, 2013 -- Updated 2140 GMT (0540 HKT)
Maria Sharapova's season has been hit by a niggling hip injury.
- Maria Shapapova pulls out of WTA tournament in Toronto
- Hip injury leaves her short of match practice ahead of U.S. Open
- Mikhail Youzhny wins Gstaad tournament in Switzerland
- Tommy Robredo sees off Fabio Fognini in Croatian final
(CNN) -- Maria Sharapova has been forced to pull out of the WTA Rogers Cup tournament in Toronto next month, still plagued by a nagging left hip injury.
Organizers of the prestigious hard court tournament announced Sunday that the four-time grand slam champion had withdrawn from the event that starts August 5.
World No.2 Sharapova has not played since sensationally losing to Portuguese qualifier Michelle Larcher de Brito in the second round at Wimbledon on the opening Wednesday.
"I am extremely disappointed that I am unable to play in Toronto next week as it's one of the best and most important tournaments of the year," the Russian said.
"I was looking forward to making a healthy return to the courts in front of my Canadian fans but unfortunately I'm just not recovered yet."
Maria Sharapova's taste for business
Women's tennis top stars talk personal
Read: Sharapova hires Connors as coach
Sharapova, who recently took on former U.S. tennis legend Jimmy Connors as her coach, will be anxious to return as soon as possible with the U.S. Open looming.
She will be left with only two hard court tournaments at Cincinnati and New Haven ahead of the final grand slam of the season on the same surface at Flushing Meadows.
Meanwhile in ATP Tour action, Russia's Mikhail Youzhny won on the clay of Gstaad as he beat Dutchman Robin Haase 6-3 6-4 in Sunday's final.
Read: Federer's return to Gstaad cut short
It was the ninth Tour title for the 31-year-old, who has waited over 18 months to return to the winners' circle.
"I'm trying everything to try and play more consistently at a high level," he told the ATP Tour official website.
The tournament was marked by the early exit of home hero Roger Federer, with fellow Swiss and second seed Stanislas Wawrinka also following him out before the weekend action.
The Croatia Open title went to Spain's Tommy Robredo, who beat Fabio Fognini of Italy 6-0 6-3 in the final.
Victory for the fifth seed ended the Italian's 13-match winning streak which has brought him titles in Stuttgart and Hamburg.
Fognini made 31 unforced errors and said the efforts of recent weeks had caught up with him.
"I would like to apologize to the fans that I could not give more in the final, but I'm simply too tired from other matches," he admitted.
Today's five most popular stories
Part of complete coverage on
August 21, 2014 -- Updated 1252 GMT (2052 HKT)
As a player he was as fiery as his hair -- and as Novak Djokovic's coach, Boris Becker says he has to battle to keep his emotions in check.
August 20, 2014 -- Updated 1102 GMT (1902 HKT)
Tennis great Boris Becker says he was stunned by the level of criticism he received after being appointed as Novak Djokovic's coach.
July 25, 2014 -- Updated 1101 GMT (1901 HKT)
"I didn't cry once when I practiced in front of the mirror," says Martin Emmrich. But the nerves kicked in when he got down on one knee on court.
June 30, 2014 -- Updated 1135 GMT (1935 HKT)
When Agnieszka Radwanska refused to look her opponent in the eye after losing at Wimbledon, it raised more than eyebrows.
June 23, 2014 -- Updated 0114 GMT (0914 HKT)
It's 10 years since a teenage Maria Sharapova became the darling of Wimbledon's hallowed Center Court, launching herself as a star.
Rafael Nadal is still the "King of Clay" -- but his crown has slipped a bit, says CNN's Will Edmonds.
May 23, 2014 -- Updated 0746 GMT (1546 HKT)
He's regularly voted France's favorite famous person, but many of the nation's youth have "no idea" about his glorious sporting past
May 5, 2014 -- Updated 2359 GMT (0759 HKT)
The Ukrainian-born, British tennis star loses fight against liver cancer, just a few weeks after revealing that she was battling the disease.
April 29, 2014 -- Updated 1555 GMT (2355 HKT)
Five-time grand slam champion Martina Hingis has followed her mom into a coaching role, setting up a new tennis academy in Barcelona, Spain.
April 16, 2014 -- Updated 1238 GMT (2038 HKT)
It's no easy matter becoming a world class tennis player. It's even harder when everyone (really -- everyone) is calling you the "new Martina Hingis."
April 2, 2014 -- Updated 1420 GMT (2220 HKT)
At the 2009 Australian Open, French men's tennis was the talk of the town.
April 15, 2014 -- Updated 1800 GMT (0200 HKT)
Rafael Nadal may be most at home on a clay tennis court, but he has always found comfort on the sea.