This page explains how Yangui Tao (USATT# 34560)'s rating went from 1263 to 1253 at the Intermediate League event from 21 Oct 2010. 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.