Re: Base of Ball or Edge of Ball??

Dave:
> All written rules I've ever observed state that any ball
> whose base is exactly ON the foul line must be considered to be
> WITHIN the kitchen since it CANNOT be OUTSIDE the kitchen...

You need to expand your reading.  Here's what the WPA has to say about it:

http://www.wpa-pool.com/rules3.htm

3.16 HEAD STRING DEFINED

The area behind the head string does not include the head string. Thus, 
an object ball that is dead center on the head string is playable when 
specific game rules require that a player must shoot at a ball past the 
head string. Likewise, the cue ball when being put in play behind the 
head string (cue ball in hand behind the head string), may not be placed 
directly on the head string; it must be behind it.

Pat Johnson
Chicago