I never heard that either, but if it was used in reference to Xball, they probably meant the back center, because he's the one that has to fill the corners if one goes down.
In 7 man, and before that 10 man, an insert was basically a mid, especially if their job was to immediately fill a front spot if the person there died.
"Once I make someone die, and they see me....they can't change their mind." -- God
Originally posted by matt00iconoclast:
"there are variables outside of physics that will affect the flight of the ball"