This page explains how Peggy Rosen (USATT# 7452)'s rating went from 2157 to 2107 at the 1999 Bemer Plus Sunbelt Team C held on - 18 Sep 1999. 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.