Posted by: tom.guerry (tom.guerry@kp.org) on Mon Nov 15 21:07:16 2004

While "x-factor" has been largely debunked,"xfactor stretch" actually remains a "tractable"
working hypothesis for many.This was studied first by Zig's group/Phil Cheatham/
skilltechnologies.

http://sportsillustrated.cnn.com/golfonline/instruction/science/secondprize.html

Xfactor stretch in golf is the same type of trunk coiling that accompanies "THT at Launch"
in my opinion.Both lead to the important last quick bit of stretch as the swing proceeds.