7 Dec 2018 - 9 Dec 2018
This page explains how George Sanguinetti (USATT# 9713)'s rating went from 2109 to 2069 at the 2018 ICC Butterfly America Open held on 7 Dec 2018 - 9 Dec 2018. 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.