This page explains how Viktor Troppmann (USATT# 49728)'s rating went from 1499 to 1470 at the West Covina 1994 Open held on - 5 Jun 1994. 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.