This page explains how Louis C. Cantor (USATT# 30994)'s rating went from 1309 to 1308 at the Seattle Open held on - 22 May 1994. 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.