This page explains how Todd Petersen (USATT# 9041)'s rating went from 2319 to 2309 at the MN Spring Open held on - 23 Apr 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.