This page explains how Randal J. Putnam (USATT# 50880)'s rating went from 1138 to 1226 at the Sacramento Winter Open held on - 18 Jan 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.