This page explains how Walter L. Gomes (USATT# 6169)'s rating went from 1255 to 1248 at the SVistaTT League event from 29 Mar 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.