This page explains how David Jia (USATT# 72925)'s rating went from 1146 to 1131 at the MDTTC Butterfly February Open held on - 10 Feb 2008. 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.