This page explains how Gary Osmanoff (USATT# 13305)'s rating went from 2082 to 2042 at the October Westfield Open held on - 19 Oct 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.