This page explains how Robert G. Johnson (USATT# 15048)'s rating went from 1409 to 1374 at the Lakeland Table Tennis League event from 5 Dec 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.