This page explains how William D Pollan (USATT# 9143)'s rating went from 1141 to 1140 at the Arkansas Independent Table Tennis League event from 14 Mar 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.