I'm probably going to reveal my math ineptitude here, but oh well... Doesn't the mean have to be .500? If each game always results in a win and a loss, and there are X number of games, then there will always be just as many wins as losses each season leaguewide. Now---in each division it's not necessarily the case of course. no, the mean doesn't have to be .500. you're telling me that if the yankees and the royals each played 1,000 games w/ their current rosters, they'd both eventually settle around .500? no way.