Oosthuizen, van der Walt share Africa Open lead

Defending champion Louis Oosthuizen and Tjaart van der Walt are tied atop the leaderboard after Saturday's third round of the Africa Open.

Oosthuizen, the second-round leader and 2010 British Open champion, birdied three of his last four to shoot a six-under 67, while van der Walt, who birdied his first four holes, fired an eight-under 65 Saturday.

The pair finished at 21-under 198 and matched the 2009 54-hole tournament record of James Kingston and Darren Clarke. Oosthuizen and van der Walt are one shot clear of two-time U.S. Open champion Retief Goosen, who carded a seven-under 66 at East London Golf Club.

Danny Willett managed a 65 on Saturday and is fourth at minus-19, followed by Richard Sterne, whose nine-under 64 was not only the low round of day, but it vaulted him to fifth place at 17-under 202.