This page explains how Sam Roberson (USATT# 25)'s rating went from 1755 to 1664 at the Modesto Jr. College TTT` held on - 21 Oct 1995. 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.