World's top golfers tackle Abu Dhabi challenge

Britain's Justin Rose is one of the best performers on day 2 of the Abu Dhabi HSBC Championship
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Justin Rose of England plays a shot on the 14th hole during the second round of the Abu Dhabi HSBC Golf Championship at Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Getty Images)
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Rory McIlroy of Northern Ireland on the driving range during the second round of the Abu Dhabi HSBC Golf Championship at the Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Ross Kinnaird/Getty Images)
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Tiger Woods of the US reacts to a poor shot as his caddie Joe LaCava looks on during the second round of The Abu Dhabi HSBC Golf Championship at Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Andrew Redington/Getty Images)
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Colin Montgomerie of Scotland hits his tee shot on the 15th hole during the second round of The Abu Dhabi HSBC Golf Championship at Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Andrew Redington/Getty Images)
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Ernie Els of South Africa hits his tee shot on the 15th hole during the second round of The Abu Dhabi HSBC Golf Championship at Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Andrew Redington/Getty Images)
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Padraig Harrington of Ireland watches his tee shot during the second round of the Abu Dhabi HSBC Golf Championship at the Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Ross Kinnaird/Getty Images)
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Paul McGinley of Ireland hits a bunker shot during the second round of the Abu Dhabi HSBC Golf Championship at the Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Ross Kinnaird/Getty Images)
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Paul Lawrie of Scotland drinks water during the second round of the Abu Dhabi HSBC Golf Championship at the Abu Dhabi Golf Club on January 18, 2013 in Abu Dhabi, United Arab Emirates. (Ross Kinnaird/Getty Images)