This page explains how David S. Chu (USATT# 4872)'s rating went from 2023 to 1992 at the WCTTA Saturday League event from 11 Nov 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.