Tea, Day 4 : AUS 6/136 (Haddin 0, Agar 0) trail by 447.
Australia's best session since Day 1, or at least it would have been had Clarke not had a brain explosion, unnecessarily gliding an innocuous delivery from part-timer Root straight to leg-slip. Perhaps it's the strain, but that was one shocking lapse, given the situation.
As is so often the case, one wicket brought another almost immediately, when Khawaja's watchful and very encouraging 54 off 133 was ended by an unplayable ball from Root, taking advantage of a large, vicious rough spot outside the left hander's off stump.
Alas, that wasn't the end of it, when Smith decided to play an awful woft at Bresnan to be caught behind of a faint edge. Of course, he decided to waste a review on it - so all reviews gone for us.
Frustrating session. Two hours of good work undone in five minutes by some atrocious shots. Australia remain on course to suffer one of the heaviest test defeats of all time.