My goodness there are alot of football games out there, wish I liked football more, but I am a silly american.
Surprised to see several people playing CSFBL. I played this game for several years (free baseball mgmt game) and oh boy, how dull. No substitutions at all (fielders), % injuries you are never really 'unable to play'. Your best player will hit .320 with 60 hr and 140 rbi one season, then go .181 with 14 hr and 63 rbi the next. Purposefully misleading scouting results, even after years of the same player being in your minors (hes had 14,000 minor league AB's but we still arent sure if he can hit). Just very very disappointed, where are the baseball versions of BB? Guess it's not international enough. Crashes for days at a time as well. Sorry, Brian.
Goal line blitz is pretty cool for american football, you get to be a player (s) and can also buy a team to manage (and stock it with your own players). However this is really a pay to play game, unless you earn points with referals, which is why there were so many referal links deleted.
If you like baseball I recommend a game called Cal Ripken's Real Baseball'. It isnt really a management game, it is more of a free mmo type gmae. You are a player and you gain skills with experience levels, eventually hoping to leave the pick-up games behind and play for an all-human team in a league. Pretty fun and free.
Also:
Hattrick
HockeyArena
BB
Madden OL
NBA Live OL
NFL Head Coach OL
Non sports games:
Battleground Europe
DDO (yes, nerd)
MoHAA ladders
HoI DD
EU III
Wild West Online Gunfighter (free)
American Civil War Game Club (Featuring the HPS series of CW campaigns, PBEM)
Oh, yeah, and I work, eat and sleep a little bit too.