The issue of Competitive Balance is a central issue in the literature on the economics of professional sports. The basic idea is that the managers of professional sports leagues must maintain a certain level of competitive balance in their league if they want it to remain attractive (Rottenberg...

In this note, we focus on the measure of Competitive Balance in a sport league when the size of the league varies. We construct a Competitive Balance index defined as the ratio of the actual standard deviation to the maximal standard deviation, the value of the denominator depending on the size...