Can anyone thing of a situation in which a ball must be dropped on the green?

[BC MIST]

I'll confirm that one.

Decision 28/11.
Q. A player’s ball is eight feet off the ground, lodged in a tree. The player deems the ball unplayable. May the player proceed under option c of Rule 28 which permits him to drop a ball within two club-lengths of where his ball lay unplayable?

A. Yes. The player would be entitled to drop a ball within two club-lengths of the point on the ground immediately below the place where the ball lay in the tree. In some instances this may allow the player to drop a ball on a putting green.

Don't you have all these decisions memorized, yet?