This page explains how Thomas N. Scanlan (USATT# 41865)'s rating went from 1676 to 1658 at the St. Joseph Valley Open held on - 29 May 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.