(CNN) -- Rory McIlroy kept his nerve in the face of a last day charge from Tiger Woods to win the Honda Classic Sunday and jump to the top of the world rankings. The 22-year-old from Northern Ireland finished with a one-under-par 69 for a 12-under total of 268 at the PGA National in Florida. The victory will see him leapfrog England's Luke Donald as world No.1, a week after missing out on the honor when beaten by Hunter Mahan in the WGC Match Play final. 14-time major winner Woods showed he is still a force to be reckoned with after a closing eight-under 62, his lowest final round as a professional.
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Rory McIlroy wins Honda Classic tournament in Florida
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McIlroy will go to no.1 in the new world rankings
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Tiger Woods puts him under pressure after an eight-under 62
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Woods and Tom Gillis finish tied for second
Rory McIlroy
Rory McIlroy
McIlroy
@placeholder, under constant pressure from those ahead of him and playing partner Tom Gillis, had to wait until the eighth for his first birdie of the day.
Tiger Woods
Woods
Tiger Woods
"It was tough today, especially seeing @placeholder make a charge.