Lol hardcore right that dude..

Never heard of anything higher than masters for team games.. :|

The power of the internets

It's a stage of progress.. Initially I always 7RR when I'm going ZvZ until I slowly picked up the know-how on handling lings and banes what with micro and whatnot.. Being greedy (reasonably) is the only way you get the upper hand against your opponent.. Since blocking is difficult, try some building placements at your expo's ramp so that the lings would have to run longer as well as placing your overlords around your base's vicinity so you get an idea when to get defensive and start building spines or units for defense.