This page explains how Melvin Evans (USATT# 12920)'s rating went from 1590 to 1577 at the Pensacola FL Winter Open held on - 3 Dec 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.