This page explains how John Foxton (USATT# 13672)'s rating went from n/a to 1891 at the Walt Stephens Memorial Open held on - 5 Apr 1997. 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.