This page explains how Walter L. Gomes (USATT# 6169)'s rating went from 1228 to 1229 at the Phoenix Open held on - 9 Oct 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.