SUN CITY, South Africa: Lee Westwood of England shot a final-round 68 Sunday to win the Sun City Challenge by eight strokes and remain world number one going into the new year. The 37-year-old needed a top-two finish at the north-west South African resort to ensure he stayed ahead of American golf icon Tiger Woods, who was poised to win the Chevron World Challenge in California later Sunday. Westwood chipped into the hole from behind the green at the final hole to finish a four-under round of 68 with a flourish and South African Tim Clark carded a 71 to snatch second place. It was the second tournament triumph of the year after the mid-year St. Jude Classic for Westwood, who lists cars, cinema, snooker and backing second-tier English football club Nottingham Forest among his interests. Long before the final putt dropped, the battle was not for top spot but the runner-up place between Clark and fellow South African and two-time US Open champion Retief Goosen at the par-72 Gary Player Country Club. And it was Clark, recovering superbly after a one-over opening round, who finished closest to Westwood as he compensated for less distance than rivals off the tee with accuracy and a clinical short game. Ogilvy wins in Australia Geoff Ogilvy shot a final-round 3-under-par 69 Sunday to win his first Australian Open by four strokes. Ogilvy finished with a four-round total of 19-under-par 269. Fellow Australians Matt Jones and Alistar Presnell finished equal second. Former champion John Senden and Jordan Sherratt, playing his first tournament as a professional, shared fourth place, seven shots behind Ogilvy. Greg Norman finished level with Scott, the defending champion. Scott shot 71 and Norman 72 Sunday to finish at 285, 16 strokes back of Ogilvy. Karlberg wins In India, Sweden's Rikard Karlberg secured victory in the $1.25-million Hero Honda Indian Open with a grandstand finish Sunday. Karlberg earned a well-deserved second Asian Tour title of the season at the Delhi Golf Club, where he also won the SAIL Open in April, by closing with a two-under-par 70 after two superb finishing birdies. His two-shot victory from overnight leader Baek Seuk-Hyun of Korea, who carded a final round 73, was worth $198,125.