This page explains how Wai M. Wong (USATT# 45824)'s rating went from 1953 to 1949 at the ICC - Advanced League event from 3 Dec 2012. 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.