This page explains how John Mar (USATT# 5185)'s rating went from 2176 to 2116 at the 2017 Newgy Wang Vision Institute Open held on 14 Oct 2017 - 15 Oct 2017. 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.