South Africa's Louis Oosthuizen took a grip on the Perth International to hold a three-shot lead into the final round at Lake Karrinyup Saturday. The world No.21 was seven-under through 15 holes in the European and Asian Tour co-sanctioned tournament and stretched his lead out to five shots. However back-to-back bogeys brought him back to the field on 15-under 201 ahead of Sunday's final round. The South African, who won the 2010 British Open at St. Andrews, is chasing his 13th career win. Oosthuizen's nearest rivals in Perth are American overnight leader Peter Uihlein and Frenchman Romain Wattel, both on 12-under 204. Wattel kept in title contention with a round of seven-under 65, while Uihlein dropped back with a one-under 71. Uihlein had four birdies and one bogey on the front nine, then had a triple-bogey on the shortest hole on the course — the downhill par-three 12th, with its tight green. He got two of those shots back on the 14th and 15th holes, then dropped another on the last to finish one-under for the day. Wattell's round had plenty of merit, given he started the day on five-under and had to deal with the onset of a strengthening sea breeze. Jason Scrivener was the leading Australian after three rounds and was 11-under 205 after carding a three-under 69. The other overnight leader Australian Brett Rumford lost ground with a one-over 73 and was in fifth spot on 10-under the card. Thompson surges ahead First round leader American Lexi Thompson resumed her spot at the front of the pack Saturday after day three of the Honda LPGA in Thailand. The 21-year-old finished the third round with a nearly perfect 64 at eight under par, giving her a four stroke lead with a 16 under par total of 200. A victory Sunday would be Thompson's seventh career win on the LPGA Tour. It would also make her the first American to win the four-day event, which is held at Siam Country Club in Chonburi and carries a $1.6 million purse. On Thompson's tail is South Korean rookie In Gee Chun, who carded a bogey-free 66 at six under par for the day. Her compatriot and defending champion Amy Yang fell back to third Saturday with an 11 under par total of 205 after topping the leaderboard at the end of round two. Shin takes 2-stroke lead South Korea's Jiyai Shin shot a 2-under 71 for one of the few sub-par rounds of the day in post-cyclonic winds Saturday to take a two-stroke lead after three rounds of the Australian Ladies Masters. Strong winds from last week's Cyclone Winston in the South Pacific buffeted the Royal Pines course, and only nine of 75 players shot under-par rounds. Shin had a 54-hole total of 10-under 209, two ahead of England's Holly Clyburn, who was tied for the late lead before bogeying her final two holes for a 72. Clyburn was tied for second with Camille Lennarth of Swden, who shot 75. Canadian Brooke Henderson, the highest-ranked player in the field at No. 11, had a 74 and was in fourth place, three strokes behind. Players were again frustrated by slow play, which resulted in rounds of more than 5 1/2 hours. Local television coverage ended with the leading groups still having three holes to play.
