This page explains how Ming Zhang (USATT# 23562)'s rating went from 2177 to 2172 at the Swan Friday O2000 Team League event from 16 Nov 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.