This page explains how Morton Greenberg (USATT# 6251)'s rating went from 1622 to 1620 at the 2010 CCY TT Tournament held on - 22 May 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.