Paul Casey had enough strokes in the bank to withstand a late wobble and won the Abu Dhabi Golf Championship for the second time in three years here on Sunday. The 31-year-old Englishman, who started the day with a four-stroke lead over defending champion Martin Kaymer, made three bogeys in four holes on the back nine, but four solid pars over the closing stretch gave him a one-stroke win over last year's champion Martin Kaymer and South Africa's Louis Oosthuizen. Casey closed with a two-under-par 70 for a total of 21-under 267. Oosthuizen, who started seven behind the leader, shot a final-round 64 to move to 268, where he was joined by Kaymer when the German knocked in an eagle putt of 30 feet on the 18th hole. It was Casey's ninth title on the European Tour, and the first since he won here exactly two years ago. The win also moves him from 41st in the world rankings to 21st and takes him to fifth place in the European Tour's Race to Dubai. England's Anthony Wall shot his third 67 in four days to finish alone in fourth place at 270. World number four Padraig Harrington, winner of both the Open and PGA Championship last year, was tied for fifth at 271 with Northern Ireland's Rory McIlroy and Swede Johan Edfors. Harrington closed with a 66, McIlroy 65 and Edfors 67. World No. 2 Sergio Garcia matched Oosthuizen's low round of the day - a 64 - to improve to tied eighth place at 272. Johnson shoots into lead In Hawaii, former Masters champion Zach Johnson birdied three of the first nine holes before breaking one stroke clear of a congested leaderboard in the Sony Open third round on Saturday. Two off the pace overnight, American Johnson took advantage of ideal scoring conditions to fire a flawless four-under-par 66 at Waialae Country Club. Although he was a little frustrated to miss a 10-foot birdie opportunity on the final hole, he was happy enough to post a 10-under total of 200 in the second event on the 2009 PGA Tour. “I got off to a pretty good start, and I think that's the key out here,” Johnson told reporters. “I had a lot of birdie opportunities today. I didn't hit it tight but I gave myself chances. “It ended a little bit sour on hole 18 but it was a long putt. It was one that was not easy, so all in all, a good day.” David Toms, the 2006 champion, chipped in to eagle the last for a 65 and a share of second place with fellow American Brian Gay (68), Australian Nathan Green (69) and Japan's Shigeki Maruyama (68). Hawaiian teenager Tadd Fujikawa, who fired a sizzling eight-under-par 62 earlier in the day, was among a group of four tied for sixth at eight under.