[Jeff]

Holeout

I think that the clubhead should start to change directions almost at the same time as the hands change directions. However, I could easily concede that in Hogan's situation, there may be slight delay between Hogan's hand movement and clubhead movement, because Hogan had ultra-flexible wrists and there may be a momentary delay before the clubhead changes directions.

KOC

There is no "gold standard" definition of the end-backswing, and I prefer to use the golf research laboratory definition. Even Phil Cheetham at the TPI now uses this same definition - when the clubhead changes direction. He previously defined the end-backswing position when the lower body changed directions and started to move forwards.

Jeff.