Defending champion Lee Westwood will take a seven-shot lead into the final round of the Nedbank Challenge in South Africa after a round of 62 on Saturday.

The Englishman began his round with three birdies in four holes while he added four successive birdies on the back nine, which he covered in just 30 strokes.

Westwood stated: "I obviously played pretty well. I can't remember missing a fairway, and I played the par-fives pretty well – I had four really good eagle chances on them and didn't make any of the eagle putts."

With 18 holes remaining, his nearest challenges remain overnight leader Graeme McDowell and Swede Robert Karlsson.