cornerback or safety
If you can put on 30 to 40 pounds of muscle you can play running back
defense of end
Quarterback or Halfback.
your tall and your pretty light. you should be a wide receiver
MLB if ur gud
Kicker or waterboy
I would say wide receiver or cornerback
A corner Back or defensive end.
If your fast: cornerback or wide receiver
In 7th grade you would probably be an offensive or defensive lineman.
Anyone you choose! - Most coaches would have you on the line
Your best bet would be to try running back, or Corner back
Punter or placekicker. No speed required.