This page explains how Melvin Evans (USATT# 12920)'s rating went from 1678 to 1647 at the Pensacola FL Spring Open held on - 30 Apr 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.