This page explains how Reginald Dulaca (USATT# 48053)'s rating went from 2185 to 2181 at the Schaumburg $1000 January Open held on - 17 Jan 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.