This page explains how Jean William Barthold (USATT# 71069)'s rating went from 1452 to 1458 at the Rhode Island Fall Open 2019 held on 27 Oct 2019 - 27 Oct 2019. 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.