A flawless round of 66 by Lee Westwood, and late mistakes by his young Race to Dubai rival Rory McIlroy, gave the Englishman a considerable advantage with one round to go in the Dubai World Championship. Westwood, the 2000 European number one, goes into Sunday's final day with a five-stroke lead over McIlroy, the player who heads him on the Order of Merit, the Race to Dubai. Although Westwood was caught by McIlroy twice, the second time on the 15th, the 36-year-old Englishman's six-under return in another absorbing day's tussle took him to 15-under-par 201. He leads by two strokes from his fellow Englishman and third-round playing partner Ross McGowan, who also got a 66. McIlroy bogeyed the last three holes of the Earth course at Jumeirah Estates to slump to a 69 and share third place with triple major champion Padraig Harrington (69) and Sweden's Alex Noren (67). The unheralded McGowan, who completed a maiden tour victory in last month's Madrid Masters, took charge of the first nine holes with five birdies, inspiring Westwood to his best. Northern Irishman McIlroy, who started the tournament 128,173 euro ahead of Westwood in the money list, pushed his more experienced Race to Dubai opponent all the way until the closing three holes. On the 16th he overshot the green and chipped long from the water's edge. He three-putted the short 17th and hit his third shot into the hazard on the last. Smith stays on course Craig Smith of Wales remained on track for his maiden Asian Tour win after maintaining his lead at the Johnnie Walker Cambodian Open at Siem Reap, Cambodia, Saturday. The towering Welshman fired a third round score of one-under-par 71 for a three-day total of 10-under-par 206 to lead by one stroke going into the final round at the Phokeethra Country Club. Thai youngster Annop Tangkamolprasert heads the chasing pack on 207 after a 70 while compatriot Sattaya Supupramai climbed up the leaderboard with a 68 to take third place on 209 at the US$300,000 full field Asian Tour event. Malaysia's Shaaban Hussin and Pariya Junhasavasdikul of Thailand took a share of fourth on 210 while India's Shiv Kapur and Jbe Kruger of South Africa are among four golfers tied in sixth position on 211. Rain plays havoc Sweden's Sophie Gustafson climbed within two shots of overnight leader Lorena Ochoa at the LPGA Tour Championship Friday as rain wreaked havock on the second round in Houston. Rain drenched the Houstonian Golf and Country Club before dawn and the start of the second round was pushed back six hours. A couple of hours after play began, light rain began to fall,and darkness stopped play before Ochoa, who led the first round with a 66, even made it to the first tee. Gustafson, who carded a first-round 70, was four-under for the tournament through 11 holes Friday when play was halted. The weekend forecast is mostly favorable, and officials are hoping to finish the season-ending event on Sunday. Ochoa is battling South Korean Jiyai Shin for the honor this year. Shin, the Rookie of the Year, carded a 70 on Thursday and like Ochoa didn't get a chance to start her second round on Friday. No one finished the second round. Sweden's Helen Alfredsson, Juli Inkster and Wendy Ward were all three