13 Nov 2021 - 13 Nov 2021
This page explains how Percy Johnson (USATT# 220565)'s rating went from 1523 to 1495 at the 2021 Butterfly MN Fall Giant RR held on 13 Nov 2021 - 13 Nov 2021. The links below take you to pages that describe various aspects of the ratings processor.
The ratings 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.