This page explains how Satoshi Uota (USATT# 10177)'s rating went from 1280 to 1259 at the Golden Western States Open held on - 14 Feb 1999. 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.