This page explains how Davis Kam (USATT# 24846)'s rating went from 2020 to 1989 at the Matchpoint TTC Super League event from 27 Nov 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.