World No. 21 Louis Oosthuizen took advantage of good scoring conditions in the third round of the ISPS Handa Perth International and has a three-shot lead heading into the final round.
Oosthuizen, 33, finished the day with a 5-under 67 to go along with rounds of 70 and 64 for a total of 15-under 201.
The South African had five birdies on the front nine on Nos. 1, 3, 6, 7 and 9 and was on his way to a 7 under after birdies on 14 and 15. Oosthuizen faltered with bogeys on Nos. 14 and 15 but remained three shots ahead of the field.