If you have an Xbox 360, then you go to memory, then there will
be a section saying "Games" and it will show how much memory your
games take up, select that, then go over the game, "Sega Superstars
Tennis" and select delete. Simple. Oh yeah, if you go to your gamer
profile and select games, the game "Sega Superstars Tennis" will be
there permanently, Sorry.