http://z7.invisionfree.com/GBBL/index.php?act=idx

Make trades, sign free agents, draft prospects, do whatever you can to
make your team a contender in a Baseball Mogul sim league. Don't worry
about the league falling apart like most sim leagues seem to do. This
league has been created by a staff that maintained a different league
for over 9 complete seasons.
All that you need to know is that if you're a baseball fan, you're
going to like this league. If you are into prospects and how baseball
management works, you're going to be 100% addicted.
The league just started, and there are some good teams left.. get them
while they're still available.

http://z7.invisionfree.com/GBBL/index.php?act=idx