This page explains how Vincent Kam (USATT# 74247)'s rating went from 1893 to 1853 at the NJTTC Thursday Adv League event from 21 Oct 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.