[tongzilla]

2-D-0 DIRECTIONAL FACTORS
The direction of the ball will always be practically at right angles to the Clubface and square to the leading edge of the Clubface at separation, unless there is enough time and speed for the Venturi Effect to alter it when scattered vectors have introduced a non-vertical spin. That is – the Flight Path (7-2) will bend away from the Flight Line (2-E). Also study 2-B in this connection. Tilting the Leading Edge changes the Clubface alignment. Up – to the left. Down – to the right. Merely deviating form the Address Plane Angle will do this by tilting the Clubshaft.

I hit a 40 yard pitch shot the other day. The divot was pointing well left of target (about 10 degrees). And yet the ball went towards the flag with some hook spin (right to left) on it. The ball always leaves 90 deg to Clubface, so the Clubface must have been open relative to Clubhead path (assuming the divot shows Clubhead path). But wouldn't that impart slice spin (due to divergence between the face and path)? There wasn't no wind or any other weired stuff. Does anyone have an explanation?