This page explains how Fred Bomberger (USATT# 1780)'s rating went from 1186 to 1173 at the April Westfield Open held on - 5 Apr 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.