Frenchman Victor Dubuisson appears destined to miss the cut at the Perth International, while Australian Rhein Gibson has shot up to second spot.
American Peter Uihlein still leads the way at eight-under, but Gibson is just two strokes further back after making a strong start to his second round.
Frenchman Romain Wattel and Indian Shiv Kapur also sit at six-under, with the pair to tee off later today.
Dubuisson sits at six-over after nine holes on Friday, with the world No.37 needing a major form reversal on his back nine if he is to make the cut.
World No.21 Louis Oosthuizen, who will tee off later today, is at two under.