This page explains how Vincent Kam (USATT# 74247)'s rating went from 1919 to 1917 at the NJTTC Thursday Adv League event from 17 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.