This page explains how Yi Gu (USATT# 54085)'s rating went from 1827 to 1817 at the February Westchester Table Tennis Open held on - 26 Feb 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.