Westwood collected two birdies on every nine in the opening round Nedbank Golf Challenge first round leaderboard-9 L Oosthuizen (SA); -6 T Detry (Bel); -5 G Migliozzi (Ita); -4 E Els (SA), Z Lombard (SA), L Westwood (Eng) Selected others: -3 O Wilson (Eng), P Waring (Eng), T Fleetwood (Eng); -1 P Harrington (Ire), M Fitzpatrick (Eng); +2 I Poulter (Eng), H Stenson (Swe)
Defending champion Lee Westwood won a fourth under 68 for a share of fourth place after the opening round of the Nedbank Golf Challenge in Sun City.
The 46-year-old former number one in the world, now ranked 62, no longer has a title since his three-stroke victory last year.
He produced a bogey-free round, including a remarkable escape from a buried lie under the lip of a bunker.
Former Open champion Louis Oosthuizen braved illness and led with three shots to nine under a bogey-free 63.
South African Oosthuizen, 37, the world number 23, Wednesday from the pro am pulled into the Gary Player Country Club due to problems with kidney stones, which required hospital treatment.
"Yesterday I spent some time in the hospital and crawled around my hotel room with kidney stones at 3 o'clock this morning, on my knees next to the toilet, which is no problem on the spot," said Oosthuizen, who was one of are birdies from 18 feet at the sixth cavity.
"Somehow it got much faster than I expected and it was just one of those rounds that I think everything just fell into place."