Westwood, Schwartzel lead by 1 shot at Sun City

Defending champion Lee Westwood birdied the last hole to shoot a 4-under 68 Thursday and share the first-round lead with Masters winner Charl Schwartzel at the Nedbank Golf Challenge.The third-ranked Westwood holed a putt from near 20 feet on No. 18 for his fourth birdie on the opening day at Sun City. The Englishman also had an eagle three and two bogeys.Schwartzel also had a productive back nine at Gary Player Country Club, picking up five shots over seven holes coming home after reaching the turn at 1 over.Top-ranked Luke Donald was the early leader on his return to competition after a five-week break, but a double-bogey six on No. 17 gave him a 70 and a tie for fourth alongside five other players.Robert Karlsson of Sweden was alone in third on 3 under after five birdies and two bogeys in his 69.Simon Dyson, fourth-ranked Martin Kaymer, South Koreas Kyung-tae Kim, Graeme McDowell and U.S. player Jason Dufner were all bunched together alongside Donald on 2 under. Just two shots separated the top 10 players.Most of the 12-man field at the $5 million invitational event struggled through the second nine after a brief rain shower, but Westwood and Schwartzel made late rallies to top the leaderboard.