A little under four years ago Marnus Labuschagne was the world's top-ranked Test batter, having averaged 60.82 across his first 30 matches for Australia.
What happened next remains one of cricket's great mysteries, with the Queenslander's career now at a crossroads and the axe again hovering.
Labuschagne was not alone in disappointing on what was Australia's worst day of cricket this decade against South Africa on Wednesday.