This page explains how Rei (Mike) Guo (USATT# 1168816)'s rating went from 1867 to 1790 at the 2022 Butterfly Cary Cup held on 17 Mar 2022 - 20 Mar 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.