This page explains how Melvin Coulon (USATT# 20691)'s rating went from 1305 to 1266 at the Louisiana State Table Tennis Club event from 12 Nov 2005. 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.