This page explains how Zachary Moy (USATT# 77490)'s rating went from 1862 to 1800 at the Summer Open held on - 25 Jul 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.