This page explains how Larry Abass (USATT# 18017)'s rating went from 2263 to 2229 at the MDTTC Saturday League event from 18 Aug 2013. 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.