Pit points are determined by the circle gap between two fighters.

For every point that someone gains, their opponent loses those points.

The minimum is 10 points, the maximum is 100 points.

So, you won probably 4 fights at 10 points each and lost 1 fight that cost you 81 points or something similar.

If you win a fight and gain 10 points, it would have cost 100 points if you had lost it.

I am --- Navak