Mark Johnson
USATT#: 26863
1868 1864
NATT
1 Jul 2007
1 Jul 2007
This page explains how Mark Johnson (USATT# 26863)'s rating went from 1868 to 1864 at the NATT event from 1 Jul 2007. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
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.