[O.B.Left]

If you look at the angle of dianes wrist cock you will see that it is less than 90 degrees, the extent of the wrist cock without bending the wrist is minimal, the ideal for geometry would be to not cock the right wrist but most probably do because most cock the left wrist beyond dianes. Physics and geometry neither must be perfect to play great golf

You can have a good amount of #2 at Top without cocking the right hand.

The amount of cup in the left wrist at Top is left hand grip type dependent. It is called Flat but it is not necessarily literally flat for all but the weakest of left hand grips. Research "geometrically flat". And take a look at how when hanging naturally at your side your left forearm and hand are slightly turned , towards your mouth actually , not at a 90 to the target line .....if theres a natural or neutral amount of turn to the left hand grip thats it. This slightly turned condition will have a corresponding cup at top, assuming the plane of the left wrist cock is purely vertical in Homer speak. No horizontal left wrist motion.


And for further food for thought .......if the palm of the left hand ideally lays flat to plane at Top then the only plane angle that would see a corresponding literally flat left wrist would be one that has the entire left arm and left shoulder laying on the plane ......the theoretical Left Shoulder Plane. Which is less than ideal.

In my opinion a lot of guys in trying to create a literally flat left wrist at Top do so via ill advised horizontal left hand motion. An arching, a horizontal motion which breaks the vertical plane of the left wrist cock but gives them the literally flat left wrist they desire. And a left wrist riding a plane that points above the ball. You can compensate , correct it on the Downstroke , lots of guys do, but why bother if simplicity is a goal.