Greene was forced to pull out of last month's Spar European Cup in Munich with an ankle injury.
Sharapova was also forced to pull out of last year's Brisbane tournament, but went on to reach the final of the Australian Open, where she was beaten by Victoria Azarenka of Belarus.
CNN: Injured Sharapova pulls out of season opening tournament
Europe team-mate and another Ryder Cup rookie Peter Hanson has been given at least Friday morning to recover from a chest infection that forced him to pull out of last week's Vivendi Cup with a chest infection.
BBC: Ryder Cup 2010: Westwood aims to lead Europe by example
Singapore has said there is no need for a bank holiday, but has a cash hoard in place should depositors pull out money to last them through a Y2K crisis.
Any Clinton-induced nod to India will feel uncomfortably like a reprise of the decision by Nawaz Sharif, the deposed prime minister, to pull out of Kashmir last summer under American pressure.
The band said it did not have confidence that the festival would run smoothly with no one harmed and so had decided to pull out of the last three days of the six-day event.
Transactions on average take longer in Britain than in most other countries because a buyer can pull out at the last minute, and gazumping (where a vendor who has agreed to a sale accepts a higher offer from someone else) is common.
ECONOMIST: The housing market has not heard of globalisation
The owners of Belle Aventure pull out big speakers on the last night to blast disco music across Falmouth Harbour.
Kournikova's participation in the 32-player event in Alabama depends upon her recovery from a thigh injury that caused her to pull out of a WTA event in South Carolina last week.
In spite of the impressive new bull market in stocks, investors continued to pull money out of stocks and equity mutual funds all last year.
FORBES: Lots Of Cash Not Being Spent Will Choke Off The Recovery
Once a month however, we like to focus our attention on just one sector, and pull out our favorite ideas from that area over the last 12 months.
Stan and Darlene Colbert were among the last families in the evacuation zone to pull out.
CNN: Crews go on offensive against growing Colorado wildfire
The police there held a protest last week to demand that American troops pull out of their police station, and let them patrol the streets of the town on their own.
Plenty of big investors who hastily decided last September that it was time to pull out of the emerging markets due to worry that the vaunted growth in those areas was decelerating are now reformulating their strategy and recalibrating their portfolios.
Mr Capriles announced on Thursday his movement would pull out of an audit of the vote, which he agreed on last week.
BBC: Venezuela's Henrique Capriles to challenge vote in court
Last month, online search giant Google threatened to pull out of China, saying Chinese hackers had penetrated some of its services in a politically motivated attempt at intelligence gathering.
The race is one of "extreme endurance and mental resilience that pushes you to right to the edge, " said Thomson, who participated in the event the last time it was held but was forced to pull out of this year's competition due to appendicitis.
Let your football knowledge pull you out of your rut so you can get into the game at last!
Harrington, who was beaten in a play-off by Jimenez last year, gave no reason for his decision to pull out.
Many analysts think that Aetna should pull out of the Medicare market altogether, as many of its peers did last year.
Although most Americans now think the war was a mistake, polls suggest that Mr McCain's determination to see it through may stand him in better stead with voters than Mr Obama's determination to pull out whatever the consequences, especially since the tide of war seems at last to have shifted firmly in America's favour.
Some 30, 000 foreign soldiers left Afghanistan last year, and most of the remainder are expected to pull out by the end of 2014.
BBC: British soldier killed by Afghan army gunman in Helmand
Indian sport is still smarting from the debacle of last year's Commonwealth Games, when several teams threatened to pull out because of unfinished or substandard facilities.
Alvarado won three of the last four rounds on two scorecards and all four on a third to pull out the fight.
Indian sport is still smarting from the debacle of last year's Commonwealth Games in Delhi, when several teams threatened to pull out because of unfinished or substandard facilities.
Nadal, who won both Wimbledon and the French Open this year, last played at the Paris Masters in October, when he was forced to pull out because of his injury problems.
The new socialist government in Spain said last weekend that it will fulfil its campaign promise to pull its 1, 400 troops out of Iraq as soon as possible.
That was the last straw for Mr Gross's coalition partners, the Christian Democrats, who threatened to pull out unless he resigned.
Mr Netanyahu's unwillingness last September to extend a freeze on expanding Jewish settlements in the West Bank prompted the Palestinians to pull out of talks only three weeks after they had resumed, to Mr Obama's intense chagrin.
应用推荐