Rory McIlroy has moved up to second place in the latest golf world rankings but Paul Dunne has made the most dramatic rise.
McIlroy has closed the gap on No 1 Jordan Spieth ahead of this week's Dubai Desert Classic.
He is ahead of third-placed Jason Day and Rickie Fowler who is fourth after victory in the Abu Dhabi HSBC Golf Championship.
After making the cut on his PGA Tour debut, Greystones golfer Dunne has moved up 127 places to 425th in the world, having turned pro late last year.
Shane Lowry is at No 21 in the world, while Graeme McDowell is further back at No 69.
Three-time major winner Padraig Harrington is outside the Top 100 at No 128.
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