Defender trying to take a charge starting to fall before contact

[Scrapper1]

Originally Posted by BryanV21

Falling back is not part of verticality.

Falling backwards isn't part of the verticality rule, but it also doesn't violate the verticality rule. The rules for maintaining a legal guarding position say that a player is allowed to move backwards after establishing that legal position. Falling back is obviously moving backwards, so this is legal.

Whether you should reward it by calling the PC foul is another question. But I don't want people to start thinking that moving backwards is necessarily illegal.