This page explains how John Mark Wetzler (USATT# 11058)'s rating went from 2256 to 2205 at the Crossover Table Tennis League event from 10 Dec 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.