Defending champion Stuart Appleby is in doubt for this week's Australian Masters due to a nagging back injury.

Stuart Appleby shot a second consecutive 6-under-par 66 to take a commanding lead at the wind-suspended Australian Open on Friday.

Stuart Appleby roller-coastered his way to a two-stroke lead over K J Choi with one round to play at the AT&T National on Saturday.

Stuart Appleby took a one-stroke lead over Greg Owen in the suspended second round of the Shell Houston Open on Friday.

Stuart Appleby defeated Vijay Singh in a play-off to claim his third straight Mercedes Championship title on Sunday.