This page explains how Jean William Barthold (USATT# 71069)'s rating went from 1511 to 1501 at the Butterfly Florida OPEN held on 28 Jul 2022 - 31 Jul 2022. 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.