Changing the pitches will do more than changing the span.

Take your arm and tuck your elbow in and hold your hand like you
hold it when you are getting ready to throw the ball (elbow in palm up)

Now move your thumb from side to side (you can see your forearm move
and you can feel the tendons on the outside of your arm tighten up as
you move your thumb inside (0 pitch). Moving your thumb outside (left pitch)
you forearm relaxes.

Switching to a left reverse pitch was the best thing that I could have done.

I'm using the Bill Taylor thumb pitch table.
4 1/4 = 0 every 1/8 more span = add 1/16 more reverse.
4 7/8 = 5/16 plus long thumb = 7/16 perfect!!!!

Lateral thumb pitch.
Grab coke bottle, if one has thumb point at index finger= 1/8 lateral out between index and middle = 0 lateral middle finger 1/8 lateral under palm between middle and ring 1/4 lateral under palm.

RE Bill Taylor = " How to fit and drill a bowling ball"



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Eric T. Spivey, P.E.
 Visionary Test Staff Member