In Chess there is a new name in top position (kpaba), have invited her but she has declined. It's OK that everybody can invite and decline whenever he wants, but the case that a player takes the top position from another without playing with him needs IMHO an exception. In this case the former one should have a right to play with the new one for the top position, and a declination of the new one to play should be regarded as resigning the game.
(Of course, not only for Chess, but for all games).
Fencer: Can you implement in the ratings ladder an
automatic function that makes this feature possible?