Otherwise, it returns None. When a player is removed from an unstarted game, playerGames and countryGames are decremented to show that the player did not really play in the game. When a player is removed from a started game it is assumed that the player has played and is being replaced so they are not decremented. Win is a boolean specifying whether that country won. Year is an integer greater than 1900 or None.
None means default to the largest win year.
Otherwise, None is returned. The club class is meant as a general interface for customization of club specific code. Only one club object should be created each time the DTM program is run. The name of the club's rating system. A refrence to the security object is given to the club when it is created in case it wants to verify credentials before allowing a user to update club data.