This page explains how John Mark Wetzler (USATT# 11058)'s rating went from 2356 to 2340 at the Club Joola January Open held on - 27 Jan 2008. 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.