This page explains how William D Pollan (USATT# 9143)'s rating went from 1382 to 1301 at the Arkansas Closed St. Champ. held on - 18 Nov 1995. 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.