Enforcement spot after change of possion

[Mark Dexter]

Originally posted by The Roamin' Umpire
We've actually been there. Take a look at this thread from about a month ago:
http://www.officialforum.com/showthread.php?postid=245793

That's different, though - in that case B intercepts the ball and B commits the foul. In this situation, B intercepts the ball, but A commits the foul.

While I don't agree with the casebook play, this play given is exactly what is written in the casebook, and the casebook states that enforcement is from the 20.