This page explains how Vern Boyce (USATT# 53043)'s rating went from 1374 to 1330 at the San Diego Fall Open held on - 15 Nov 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.