This page explains how Peggy Rosen (USATT# 7452)'s rating went from 2201 to 2197 at the Louisiana Open held on - 26 Mar 1995. 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.