This page explains how Jim Weisbecker (USATT# 28820)'s rating went from 1387 to 1377 at the Lakeland Table Tennis League event from 12 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.