Defending champion Adam Scott shot a 5-under 66 Saturday to open a four-stroke lead at the Australian Masters and close in on a second consecutive win Down Under.
The Masters champion and winner of last week's Australian PGA has a three-round total of 14-under 199 at Royal Melbourne.
Vijay Singh shot a 63 and was in a four-way tie for second with Australians Matthew Griffin (69), Nick Cullen (69) and Nathan Holman (70).
Singh countered his only bogey, on the par-4 ninth, with three birdies on the back nine.
Matt Kuchar was tied for sixth after a 67. Jarrod Lyle, continuing his comeback from a 20-month layoff due to leukemia, shot 70 and was at even par.