This page explains how Millie Murphy Drake (USATT# 5459)'s rating went from 1183 to 1152 at the South Bay Table Tennis League event from 12 May 2009. 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.