The deepest mystery of the New Zealand Olympic rowing campaign has been solved - why world-class double scullers Joseph Sullivan and Nathan Cohen had such a puzzling collapse in form leading up to London.
Sullivan and Cohen came into this season as two-time defending world champions but finished last in the B final of the World Cup in Lucerne (12th) in May, behind such unfancied crews as Argentina and Egypt.
Trouble ensued. Cohen and Sullivan, two normally measured, loyal individuals, began to question themselves and each other as to how one of Rowing New Zealand's most promising campaigns could so badly lose its aura in the off-season.
It was the sort of setback that can ruin an Olympic campaign, especially in a ticklish sport like rowing where getting the boat to go fast can be such a subtle, delicate marriage of physical and mental application.
Then the scullers had a bit of an epiphany. Inadvertently they examined the right oar blades of their boat two days before the next World Cup in Munich. They realised the blades were warped at the bottom, something initially not obvious to the human eye. It affected the catch in the rowing stroke and the subsequent passage of the boat through the water.