The problem is at the other end of batting order. Our openers keep failing so we're always 2 down for little and on the back foot needing Smith and now Labuschagne to rescue us and make the bulk of the runs. Bancroft's not up to it and Harris has also failed since he has come into the XI. Warner hasn't been able to replicate his ODI form with Broad having his measure this series.
Warner's average vs Broad:
Before this series, 64.8 (324 runs, five dismissals);
in this series, it's 6.4 (32 runs, five dismissals)
Source: Cricinfo.