This page explains how David K Wong (USATT# 91820)'s rating went from 1238 to 1222 at the 2016 Glendale Friendship Games held on 29 Oct 2016 - 30 Oct 2016. 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.