Quick Update...Before today, any sports that had drop downs on the "Team Edit Stats" page counted a Game Played for every player even if you added stats for only one. Now a Game Played will only register if you enter a statistic into at least one category for a player.
If your GP category is not correct for certain sports, go into the "Team Edit Stats" page and clear out each field for each player that did not play in that game. Once each of those rows is completely blank, submit the form and your GP category should be correct.