This page explains how Sungsup Lee (USATT# 90958)'s rating went from 1820 to 1798 at the Austin Table Tennis League event from 29 Sep 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.