This page explains how Zachary Moy (USATT# 77490)'s rating went from 1818 to 1821 at the 2015 Butterfly Badger Open held on - 20 Sep 2015. The links below take you to pages that describe various aspects of the rating processor.

The rating processor goes through 4 passes in order. The links take you to pages that provide detailed explanations of the calculations during each of the 4 passes.