Australia, still reeling from conceding 414 runs in the fourth innings of the First Test, have made some changes to their attack ahead of the Boxing Day Test. Ben Hilfenhaus has been called into the squad as an extra option, Krejza has been swapped for Hauritz, but Siddle stays.
The logic of bringing in Hilfenhaus is that he could cause South Africa the same sort of problems that Johnson did in Perth. What this means for the struggling Brett Lee is unclear, but Siddle, who took only one wicket at the WACA, is the more likely candidate for being dropped.
The main factor that will fire up the hosts is likely to be the sour taste of home defeat, not a familiar flavour for most of the side.