This page explains how Darryl Tsao (USATT# 98262)'s rating went from 2363 to 2421 at the Spartans Butterfly Open held on 11 Jun 2021 - 13 Jun 2021. 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.