This page explains how John Rapczyk (USATT# 1174635)'s rating went from 887 to 867 at the SATTA May 2024 Open held on 5 May 2024 - 5 May 2024. 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.