This page explains how George Nie (USATT# 71290)'s rating went from 1915 to 1915 at the MDTTC Saturday League event from 17 Jan 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.