This page explains how Vincent Kam (USATT# 74247)'s rating went from 1980 to 1965 at the NJTTC Thursday Adv League event from 1 Aug 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.