We need to talk about Tim Southee. His batting suffered a jump-the-shark moment in the test at Pretoria but it is his bowling that should concern his coach and captain the most.
How South Africa managed to score 481-8 on a difficult Centurion wicket is almost beyond analysis, suffice to say they had a lot of luck and a huge helping hand as they cruised to 133-0 in the first session or so.
Southee's 2016 test numbers are unhelpful, even taking into account the nice little boost they've received from South Africa's devil-may-care second innings in Pretoria.
He's taken 14 test wickets while conceding 646 runs in 211 overs. He hasn't been tight and he hasn't been penetrative. It's a quinella of ineffectiveness.
Trent Boult has endured his struggles as well, though he at least looks like he's returning to somewhere near top pace. Still, his 16 wickets this year have come at a costly 38.