This page explains how John Mar (USATT# 5185)'s rating went from 2228 to 2218 at the Georgia Games held on 21 Jul 2018 - 22 Jul 2018. 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.