Umpire's liabilities

[Steve M]

Mike will be the one who can really answer this with authority - and that will most likely give all of us some guidance. Federation rules state that a player who has been knocked out may not play again that day unless you get a written note from a doctor. As near a I can recall, there are no other restrictions (minus any blood). As a man who cares a great deal about others, I've seen a number of folks in a game that I really did not think were fit to play - due to injury, sickness, whatever. As an ump, I do not see that decision as being part of my responsibility or authority.