This page explains how Rei (Mike) Guo (USATT# 1168816)'s rating went from 1990 to 2010 at the 2023 Butterfly Teams Tournament held on 5 Aug 2023 - 6 Aug 2023. 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.