This page explains how Richard E Rowland (USATT# 70415)'s rating went from 1494 to 1490 at the Statesville Table Tennis League event from 29 Sep 2014. 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.