This page explains how Darryl Tsao (USATT# 98262)'s rating went from 2191 to 2163 at the Swan Sunday League event from 28 Apr 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.