This page explains how Daniel Petterson (USATT# 72857)'s rating went from 1507 to 1462 at the 54th St.Joseph Valley Open held on 17 Mar 2018 - 18 Mar 2018. 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.