This page explains how Dana Yeoh (USATT# 198208)'s rating went from 1776 to 1820 at the ICC Butterfly Winter Open held on 24 Feb 2019 - 24 Feb 2019. 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.