US Chess Match Play Rules

These are not the complete set of rules but are items to be aware of
when choosing your opponent etc.

Both players must have established and published ratings, and those ratings must be no more than 400 points apart as of the most recent published ratings.

A player may gain or lose no more than 50 rating points in a match.  (Not a problem with a one game match.)

Any player who playes in a match and who is either at his or her floor or reaches his or her floor
as a result of that match will be consider to have submitted a request to have that floor lowered by 100 points.  The USCF ratings department will review
the player's tournament history to decide if the floor should be lowered.