This page explains how Yahao Zhang (USATT# 31038)'s rating went from 1928 to 1918 at the Albuquerque Teams Tournament held on - 17 Apr 2004. 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.