William D Pollan
USATT#: 9143
1499 1438
Arkansas Open
- 14 Mar 1999
- 14 Mar 1999
This page explains how William D Pollan (USATT# 9143)'s rating went from 1499 to 1438 at the Arkansas Open held on - 14 Mar 1999. The links below take you to pages that describe various aspects of the rating processor.
Introduction
Initial Rating
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.