This page explains how Lisa Schrader (USATT# 69642)'s rating went from 1495 to 1490 at the Los Angeles Table Tennis Association event from 1 Sep 2008. 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.