This page explains how Douglas Lee Hibbs (USATT# 6638)'s rating went from 1878 to 1811 at the Houston Summer Open held on - 11 Aug 1996. 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.