$\Sigma: \textrm{set of all the team permutations}\\
\mathbb{X}: \textrm{set of all the enemy skill permutations}\\
x(s)\textrm{ where }x\in\mathbb{X},~s\in\Sigma:\textrm{ the "height" of team s under enemy skills x}$

$\textrm{definition: MakeBall}\\\exists \Sigma^{
'}\subset \Sigma~\exists \sigma \in \Sigma~\exists x \in \mathbb{X}~\forall y \in \mathbb{X}~\forall s\in\Sigma^{'},\\
~x(\sigma)\approx y(\sigma)~\land~x(s)\ll y(s)~\land~\frac{|\Sigma^{'}|}{|\Sigma|}\approx 1$