This page explains how Ron Rozumalski (USATT# 88285)'s rating went from 697 to 669 at the $6000 Nittaku Ohio Open held on 13 Aug 2021 - 14 Aug 2021. 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.