This page explains how Tim St. Germain (USATT# 52013)'s rating went from 1809 to 1820 at the 9th Paul Cracraft Memorial & J held on - 22 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.