This page explains how Jean Helmick (USATT# 37258)'s rating went from 1215 to 1165 at the Hononegah Halloween Open held on - 29 Oct 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.