Northern Ireland's Rory McIlroy tees off on the 14th hole while playing South Korea's Bae Sang-moon during the Match Play Championship golf tournament, Saturday, Feb. 25, 2012, in Marana, Ariz. (AP Photo/Matt York)
Rory McIlroy feels the changes he's made to his swing will work in time for the Masters, which begins April 5. The 22-year-old has been working with longtime coach Michael Bannon on improving his setup. (Rod Lamkey Jr./The Washington Times)
Rory McIlroy from Northern Ireland plays a ball on the 17th hole during the first round of Abu Dhabi HSBC Golf Championship, Thursday, Jan. 26, 2012 in Abu Dhabi, United Arab Emirates. (AP Photo/Kamran Jebreili)
Northern Ireland's Michael Hoey celebrates winning the Dunhill Links Golf Championships at St Andrews, Scotland Sunday Oct. 2, 2011. Michael Hoey held off compatriots Rory McIlroy and Graeme McDowell to win the Dunhill Links Golf Championship as Northern Irish players continued their run of success.
Rory McIlroy, of Northern Ireland, reacts to his tee shot on the 18th hole during the second round of the PGA Championship golf tournament Friday, Aug. 12, 2011, at the Atlanta Athletic Club in Johns Creek, Ga. (AP Photo/Matt Slocum)
Northern Ireland's Rory McIlroy reacts after putting on the 18th green during the second day of the British Open Golf Championship at Royal St George's golf course on Friday. McIlroy shot a 1-under 69 to give him a 140 for the first two rounds. (AP Photo/Tim Hales)