There are 3 excellent manager games I'll tell you:
Onlinetennis ---> www.onlinetennis.de
Tennis manager game, not like TE Manager, where you can train your player (you have to put your real name and you can play for any nation, but you can't change your nationality more than 1 time), set the tactics and play in tournaments.
I was number 7 and US Open winner there few seasons ago, so if you need help contact me

PManager ---> www.pmanager.org
Football manager game, I think too much better than Hattrick and MZone. You have to think a lot of times before set your tactic, because tactics are more important than skills of the players. I was South Africa U-21 manager few seasons ago...
Footstar ---> www.footstar.org
In that game you are not the manager of a team, you are the player. You can also be manager of a team but you have to pay. You set your train and you have to look for a team...