This page explains how Hung Quoc Nguyen (USATT# 42134)'s rating went from 1991 to 1984 at the Long Beach Table Tennis League event from 7 Feb 2004. 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.