I added few teams to Google Now to see how it worked.
Now I left San Francisco and I don't give a * about the Giants' score.
I tried to remove the team by going to settings, clicking on the team, remove. The team is removed but after a few minutes it reappears.
I have two devices running Jelly Beans so I though it was a synchronization bug. I removed the team on both devices at the same time, but it still keeps reappearing.
How can I definitely remove it ?
Edit: My Galaxy Nexus is running 4.1.2 and my Asus Transformer Infinity is running 4.1.1.