This page explains how Aaron Avery (USATT# 48793)'s rating went from 1937 to 1938 at the South Bend Open held on - 6 Dec 1998. 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.