Tom,
In addition to firmness, what about the primary slope of each green and it's influence on receptivity and scoring.
For example in two weeks at Oakmont these guys will see the following primary slopes:
Front to Back - Greens 1,3,10,12
Back to Front - Greens 2,7,13,17,18
Right to Left - Greens 5,6
Left to Right - Greens 9 (has 3 separate L to R sections), 11,16
"Flat"/Plateau - 4,8,14,15
(Note: the above might not be perfect but it's close)
What influence might this factor have on scoring?
I've only been to Muirfield Village one time, perhaps someone could let us know if perhaps the majority of greens there slope primarily from back to front for example.