This page explains how Martin Plost (USATT# 60632)'s rating went from 1558 to 1557 at the Meiklejohn North American Seni held on - 8 Jun 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.