This page explains how Satoshi Uota (USATT# 10177)'s rating went from 1293 to 1280 at the 1998 Pacific Coast Open held on - 13 Sep 1998. 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.