This page explains how Ken R. Drayton (USATT# 5460)'s rating went from 1164 to 1218 at the Rochester Giant RR held on - 1 Mar 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.